Security Assessments and Reviews

Keeping our digital world safe is a big job, and it’s always changing. We’re going to look at how we can check and review our security measures to make sure they’re actually doing their job. It’s not just about having tools; it’s about making sure they work together and that we’re not missing anything obvious. Think of it like checking the locks on your house and making sure the windows are shut – simple steps that make a big difference.

Key Takeaways

Understanding the core principles of security, like the CIA Triad, helps us know what we’re protecting and why.
Regular security assessments are key to finding and fixing weaknesses before bad actors can exploit them.
Layered defenses and managing who gets access to what are crucial for keeping systems secure.
Keeping software up-to-date and developing applications with security in mind from the start reduces risks.
Even the best technical controls can be bypassed if people aren’t aware of the risks, making training and awareness important.

Foundational Security Assessment Principles

Understanding The CIA Triad

The CIA Triad is a cornerstone of information security, representing the three primary objectives: Confidentiality, Integrity, and Availability. Think of it as the basic checklist for keeping digital stuff safe. Confidentiality means making sure only the right people can see sensitive information. This is often handled with things like passwords, encryption, and access controls. Integrity is about keeping data accurate and unchanged. If someone messes with a financial record, that’s an integrity issue. Controls like digital signatures and version tracking help maintain integrity. Finally, Availability means that systems and data are there when you need them. If a website is down, that’s an availability problem. Redundancy and backups are key here.

Confidentiality: Preventing unauthorized disclosure of information.
Integrity: Ensuring data is accurate and hasn’t been tampered with.
Availability: Guaranteeing systems and data are accessible when needed.

Balancing these three can be tricky. Sometimes, beefing up one might slightly impact another, so it’s about finding the right mix for your specific needs.

Identifying Cyber Risk, Threats, and Vulnerabilities

To protect ourselves, we first need to know what we’re up against. Cyber risk is basically the chance that something bad will happen to our digital assets, and how bad it could be. This risk comes from threats, which are the bad actors or events that could cause harm, and vulnerabilities, which are the weak spots in our systems or processes that a threat could exploit. For example, an unpatched software program is a vulnerability. A hacker trying to exploit that vulnerability is a threat. The risk is the potential for that hacker to break in and cause damage. Identifying these requires looking at your systems, understanding how they work, and thinking like an attacker.

Here’s a breakdown:

Vulnerabilities: Weaknesses in systems, software, or processes (e.g., outdated software, weak passwords, misconfigurations).
Threats: Potential sources of harm (e.g., malware, phishing attacks, insider actions, natural disasters).
Risk: The likelihood of a threat exploiting a vulnerability, combined with the potential impact.

Defining Cybersecurity and Its Purpose

Cybersecurity is essentially the practice of protecting our digital world – systems, networks, devices, and data – from unauthorized access, damage, or disruption. It’s not just about firewalls and antivirus software, though those are part of it. It’s a much broader effort. The main goal is to keep information safe and systems running smoothly, even when bad actors are trying to mess things up. This helps build trust in the technology we use every day and makes sure businesses can operate without constant fear of digital attacks. It’s about maintaining that digital trust and making sure things work reliably.

Purpose: To protect digital assets and systems.
Key Objectives: Maintain confidentiality, integrity, and availability of information.
Scope: Covers technical controls, policies, and human behavior.

Ultimately, cybersecurity is about enabling the digital world to function securely and reliably, allowing individuals and organizations to operate with confidence.

Enterprise Security Architecture and Design

Building a strong security posture for an organization isn’t just about picking the right tools; it’s about how you put them together. Enterprise security architecture is basically the blueprint for how security controls are set up across your entire digital landscape – think networks, devices, applications, and even how people access things. It’s about making sure your security setup actually helps your business goals and fits with how much risk you’re willing to take on.

Enterprise Security Architecture

This is where we map out how all the security pieces fit together. It’s not a one-and-done thing, either. We’re talking about integrating security from the ground up, making sure it aligns with what the business needs to do. A good architecture uses a mix of ways to stop bad stuff from happening, catch it if it does, and fix it afterward. It’s about creating a solid foundation for everything else. We need to think about how to reduce the places attackers can get in, which means looking at everything from network entry points to how applications are built. A key part of this is understanding your cyber risk management and how it influences your design choices.

Defense Layering and Segmentation

Imagine a castle. You don’t just have one big wall; you have multiple layers of defense. That’s what defense layering is all about in cybersecurity. We spread out security controls so that if one layer fails, there are others ready to step in. Network segmentation is a big part of this. It’s like dividing your castle into different sections. If an attacker gets into one section, they can’t just wander into all the others easily. This limits how far they can move around and what they can access. Microsegmentation takes this even further, creating very small, isolated zones.

Identity-Centric Security Models

Things have changed a lot from the old days of just guarding the network perimeter. Now, we’re seeing a shift towards identity-centric security. This means we focus more on verifying who someone is and what they’re allowed to do, rather than just where they’re connecting from. Think about it: if your identity is compromised, it doesn’t matter how strong your network walls are. Models like Zero Trust, where you never automatically trust anything or anyone, and the principle of least privilege, where users only get the access they absolutely need, are becoming really important here.

Access Governance and Privilege Management

This ties directly into identity-centric security. Access governance is about making sure people have the right permissions, and not too many. The principle of least privilege is key here – users should only have the minimum access necessary to do their jobs. Privilege management systems are tools that help keep an eye on and control accounts that have elevated access, like administrator accounts. Unchecked privileges can create huge security holes that attackers love to exploit. It’s important to have clear processes for granting, reviewing, and revoking access.

Here’s a quick look at how access is typically managed:

Requesting Access: A user or system requests access to a resource.
Authentication: The user’s identity is verified (e.g., password, multi-factor authentication).
Authorization: Based on policies and roles, the system determines if the authenticated user is allowed to access the requested resource.
Auditing: All access attempts and actions are logged for review and compliance.

Managing access effectively is a constant balancing act. Too little access frustrates users and hinders productivity, while too much opens the door to potential misuse and breaches. Finding that sweet spot requires careful planning and ongoing review.

Secure Development and Application Security

Building secure software from the ground up is way more effective than trying to patch things later. It’s like building a house; you wouldn’t want to discover the foundation is cracked after all the walls are up, right? This section looks at how we bake security into the whole process, from the very first idea to when the software is actually out there being used.

Secure Software Development Practices

This is all about making security a standard part of how we create software, not an afterthought. It means thinking about potential problems early on. We’re talking about things like:

Threat Modeling: Before writing a single line of code, we try to figure out what could go wrong. Who might attack it? How could they do it? What are the most sensitive parts?
Secure Coding Standards: Developers follow specific rules to avoid common mistakes that lead to vulnerabilities. This includes things like properly handling user input to prevent injection attacks and managing memory safely.
Code Reviews: Having other developers or security experts look over the code helps catch issues that the original author might have missed. It’s a good way to share knowledge and improve code quality.
Dependency Management: Software often uses pre-built components or libraries. We need to make sure these are up-to-date and don’t have known security holes. Keeping track of these dependencies is key.

The goal here is to reduce vulnerabilities before they ever make it into the software. It’s a proactive approach that saves a lot of headaches down the road. You can find more on integrating security into the development lifecycle at secure system configurations.

Application Security Testing

Even with the best practices, it’s smart to test the software thoroughly. This is where application security testing comes in. We use different methods to find weaknesses:

Static Application Security Testing (SAST): This is like a spell-checker for code, but for security flaws. It analyzes the source code without actually running the program to find potential issues.
Dynamic Application Security Testing (DAST): This method tests the application while it’s running. It sends various inputs and probes to see how the application responds, looking for vulnerabilities like cross-site scripting or SQL injection.
Interactive Application Security Testing (IAST): This combines aspects of SAST and DAST, often using agents within the running application to identify vulnerabilities in real-time.
Penetration Testing: This involves simulating real-world attacks to see how far an attacker could get. It’s a more hands-on approach that can uncover complex vulnerabilities.

Regular testing helps catch flaws early, making them cheaper and easier to fix. It’s a vital part of making sure the applications we use are robust.

Cryptography and Key Management

Cryptography is the science of secret codes, and it’s fundamental to protecting data. When we talk about it in application security, we’re usually concerned with:

Encryption: This is the process of scrambling data so only authorized parties can read it. It’s used to protect data both when it’s stored (at rest) and when it’s being sent across networks (in transit).
Hashing: This creates a unique, fixed-size fingerprint for data. It’s used to verify data integrity – making sure data hasn’t been changed.
Key Management: This is arguably the most critical part. Cryptography relies on secret keys. Managing these keys securely – how they are generated, stored, used, rotated, and eventually destroyed – is incredibly important. If your keys are compromised, your encryption is useless.

Proper cryptography and robust key management are the bedrock of data confidentiality and integrity. Without them, even the most sophisticated application security measures can be undermined, leaving sensitive information exposed to unauthorized access or modification. It’s not just about using encryption; it’s about managing the keys that make it work effectively and securely over time.

Getting these elements right is key to protecting sensitive information and maintaining user trust. It’s a complex area, but essential for modern applications.

Vulnerability Management and Remediation

Dealing with vulnerabilities is a big part of keeping things secure. It’s not just about finding problems; it’s about fixing them before someone else does. Think of it like finding a loose screw on your car – you want to tighten it before it causes a bigger issue down the road.

Vulnerability Management and Testing

Vulnerability management is basically the ongoing process of figuring out where your weak spots are. This involves regular scanning of your systems and applications to find known flaws. We’re talking about things like outdated software, misconfigured settings, or services that are exposed to the internet when they shouldn’t be. The goal is to get a clear picture of your attack surface. Once we find these issues, we need to figure out how serious they are. Not all vulnerabilities are created equal, right? Some are easy to exploit and could lead to a major breach, while others are more theoretical. So, we prioritize them based on how likely they are to be used by attackers and what kind of damage they could cause. This helps us focus our efforts where they matter most.

Identify: Use tools to scan systems and applications for known weaknesses.
Assess: Evaluate the severity and potential impact of each identified vulnerability.
Prioritize: Rank vulnerabilities based on risk to the organization.
Remediate: Plan and execute actions to fix or mitigate the vulnerabilities.

Effective vulnerability management is a continuous cycle, not a one-time fix. It requires ongoing effort to keep pace with new threats and changes in your environment.

Patch Management

Once we know about a vulnerability, the next logical step is to patch it. Patch management is all about making sure your software and systems get the updates they need to fix these security holes. It sounds simple, but it can get complicated fast. You’ve got to test patches to make sure they don’t break anything else, then deploy them across all your systems. Sometimes, vendors release patches very quickly, and other times, you might be waiting a while. For critical systems, delaying patches can be a huge risk. We need to have a solid process for this, ideally with some automation to speed things up and reduce mistakes. It’s one of the most effective ways to reduce your exposure to common attacks. You can find more information on how to handle these situations in our incident response guide.

Secure Network Architecture

Building a secure network from the ground up is also key. This means designing your network with defense in mind from the start. We’re talking about things like segmenting your network so that if one part gets compromised, the attacker can’t easily move to other areas. It’s like having bulkheads on a ship; if one compartment floods, the whole ship doesn’t go down. Layering security controls is another big part of this. You don’t want to rely on just one type of defense. Having firewalls, intrusion detection systems, and strong access controls all working together creates a much stronger defense. This layered approach makes it harder for attackers to find a way in and limits the damage if they do.

Cloud and Endpoint Security Controls

When we talk about protecting our digital stuff, cloud and endpoint security are two big areas that need attention. Think of endpoints as any device that connects to your network – laptops, phones, servers, you name it. They’re often the first place attackers try to get in, so keeping them locked down is super important. This means things like making sure antivirus software is up-to-date, devices are patched regularly, and that they meet certain security standards before they can even connect.

Cloud environments, on the other hand, are a bit different because the infrastructure isn’t entirely under our direct control. We’re sharing it with a provider, which means we have to be really clear about what our responsibilities are versus theirs. A big part of this is managing who can access what. Identity and Access Management (IAM) is key here, making sure only the right people have the right permissions. It’s not just about logging in; it’s about what you can do once you’re in. Misconfigurations in the cloud are a huge risk, often leading to breaches because storage buckets are left open or access rules are too relaxed. We need to constantly monitor these settings.

Here are some common areas to focus on:

Endpoint Protection: This includes tools like Endpoint Detection and Response (EDR) that watch for suspicious activity on devices, not just known viruses. Keeping devices patched and encrypted is also a must.
Cloud Configuration Management: Regularly checking that cloud services are set up securely. This often involves using specialized tools to scan for misconfigurations and compliance issues.
Identity and Access Management (IAM) in the Cloud: This is about controlling user access to cloud resources. It involves strong authentication, like multi-factor authentication, and making sure roles and permissions are set up using the principle of least privilege.
Data Security in the Cloud: Protecting sensitive data stored in the cloud through encryption and access controls.

Cloud security is a shared responsibility. Understanding your role and the provider’s role is the first step to securing your cloud assets. Don’t assume the provider handles everything.

Tools like Cloud Access Security Brokers (CASBs) can help bridge the gap, giving you more visibility and control over how cloud services are being used. They can enforce policies and detect risky behavior, which is pretty handy. Ultimately, securing both your endpoints and your cloud presence requires a layered approach, constant vigilance, and a clear understanding of where the risks lie. It’s an ongoing effort, not a one-time fix, and staying informed about the latest threats is part of the job. You can find more information on general cybersecurity controls to understand how these fit into the bigger picture. For cloud environments specifically, understanding how to monitor for threats is vital, and resources on cloud forensic analysis can offer deeper insights into detection and investigation methods.

Network Security Technologies

Network security is all about keeping your digital connections safe. Think of it as the digital equivalent of locks, alarms, and security guards for your computer systems and the information flowing through them. It’s not just about stopping bad guys from getting in; it’s also about making sure the information that is supposed to get through, gets through reliably and without being messed with. In today’s world, where so much of our work and life happens online, this stuff is pretty important.

Firewalls

Firewalls are like the bouncers at the club entrance for your network. They stand between your internal network and the outside world (like the internet) and check every piece of data trying to get in or out. They have a set of rules, and if the data doesn’t follow those rules, it gets blocked. Modern firewalls are pretty smart; they don’t just look at where data is coming from, but also what kind of data it is and if it looks suspicious based on past bad behavior. Properly configured firewalls are a big step in reducing your attack surface.

Web Application Firewalls (WAF)

Web Application Firewalls, or WAFs, are specialized for protecting websites and web applications. While a regular firewall might block traffic to a specific port, a WAF looks deeper into the actual requests being made to your web server. It’s designed to catch attacks that target the application itself, like trying to inject malicious code (SQL injection) or tricking users into running bad scripts (cross-site scripting). They can act as a virtual shield, protecting your applications even if you haven’t patched a specific vulnerability yet.

Intrusion Detection and Prevention Systems (IDS/IPS)

Intrusion Detection Systems (IDS) and Intrusion Prevention Systems (IPS) are like the surveillance cameras and security patrols within your network. An IDS watches network traffic and system activity for any signs of trouble – like someone trying to break in or unusual behavior that doesn’t fit the normal pattern. If it spots something suspicious, it sends an alert. An IPS takes it a step further: if it detects a threat, it can automatically take action to block it, like stopping the suspicious traffic or isolating the affected system. These systems are key for real-time threat detection.

Governance, Risk, and Compliance Frameworks

Cybersecurity Governance Overview

Cybersecurity governance is all about setting up the right structure for oversight and making sure everyone knows who’s in charge of what. It’s about aligning security efforts with what the business is trying to achieve and defining how decisions get made. Think of it as the rulebook and the management team for your security program. Effective governance ensures that cybersecurity isn’t just an IT problem, but a business priority. It helps set the overall direction and acceptable risk levels for the organization.

Risk Management Foundations

Risk management is the process of figuring out what could go wrong, how likely it is, and what the impact would be if it did. We’re talking about identifying potential threats, like malware or phishing attacks, and understanding the vulnerabilities, like unpatched software or weak passwords, that could let those threats cause damage. The goal is to prioritize where to spend time and resources to reduce the chances of something bad happening. It’s a constant balancing act between security and business operations.

Compliance and Regulatory Requirements

This part deals with following the rules. Depending on your industry and where you operate, there are specific laws and regulations you have to follow regarding data protection and cybersecurity. This could be anything from GDPR in Europe to HIPAA for healthcare in the US. It’s not just about avoiding fines; it’s about building trust with customers and partners by showing you handle their data responsibly. Compliance often means having documented controls and undergoing regular checks to prove you’re meeting the standards.

Standards and Frameworks

Frameworks are like roadmaps that provide structured guidance for managing cybersecurity. They offer a common language and a set of best practices that organizations can adopt. Examples include the NIST Cybersecurity Framework, ISO 27001, or COBIT. Using these frameworks helps ensure consistency in your security efforts, allows for benchmarking against industry peers, and provides a solid foundation for building and improving your security program. They help bridge the gap between technical security measures and executive decision-making, making security more manageable and measurable. Adopting a recognized framework can also be a key part of meeting compliance obligations.

Security Awareness and Human Factors

When we talk about cybersecurity, it’s easy to get caught up in firewalls, encryption, and all the technical stuff. But honestly, a lot of security issues boil down to us, the people using the systems. That’s where security awareness and understanding human factors come in. It’s about recognizing that people are often the first line of defense, but also, sometimes, the weakest link.

Onboarding Security Training

Getting new folks up to speed on security is super important. When someone starts a new job, they need to know the basics right away. This isn’t just about telling them not to click on weird links; it’s about setting expectations for how we handle data, protect accounts, and what to do if something seems off. A good onboarding program makes security a normal part of the job from day one.

Phishing Simulations

We all get those emails that look a little too real, right? Phishing simulations are basically practice drills for spotting those. We send out fake phishing emails to see who bites. It sounds a bit harsh, but it’s a really effective way to see where people might need more training. The results help us figure out if our awareness efforts are actually working or if we need to change our approach. It’s all about building resilience before a real attacker tries to trick us.

Social Media Awareness

Think about how much information we share online these days. Attackers are definitely looking at social media to gather intel. They can find out where you work, who you work with, and even your personal habits. This information can then be used to craft really convincing attacks. So, we need to be mindful of what we post and understand that public information can be used against us or the company.

Security Fatigue

It’s a real thing. When you’re bombarded with alerts, security warnings, and endless policies, it’s easy to just tune it all out. You start to feel tired of being vigilant all the time. This ‘security fatigue’ can make people ignore important warnings or skip security steps because it’s just too much. We have to find ways to make security measures less intrusive and more intuitive so people don’t get worn down by them.

Incident Response and Business Resilience

When a security incident strikes, it’s not just about stopping the bad guys; it’s about getting back to normal as quickly and smoothly as possible. This section looks at how organizations prepare for, react to, and recover from cyber events, making sure the business can keep running.

Incident Response Governance

Having a clear plan for who does what during a security incident is super important. This means setting up who’s in charge, how people will talk to each other, and who needs to approve certain actions. Without this structure, things can get chaotic fast, and that’s the last thing you want when you’re already dealing with a problem. Good governance means everyone knows their role, which helps speed up the whole process.

Business Continuity and Disaster Recovery

This is all about keeping the lights on, even when things go wrong. Business continuity planning focuses on making sure the most important parts of the business can keep operating during a disruption. Think of it like having a backup plan for your critical services. Disaster recovery, on the other hand, is more about getting your IT systems back up and running after a major event. It’s about restoring data and systems so you can get back to full operation. The goal is to minimize downtime and data loss, no matter the cause.

Develop detailed playbooks: These are step-by-step guides for specific incident types.
Regularly test your plans: Tabletop exercises and simulations help find weaknesses before a real event.
Maintain up-to-date contact lists: Ensure you can reach key personnel and external partners quickly.

Resilience and Adaptation

Recovering from an incident isn’t just about fixing what’s broken; it’s about learning from it and becoming stronger. Resilience means building systems and processes that can withstand future attacks better. This might involve changing how you design your network, improving your security tools, or even adjusting your company culture. It’s about adapting to the ever-changing threat landscape. We need to be ready for the next challenge, and that means continuous improvement based on what we learn from past events. This proactive approach helps reduce future risks.

True resilience means not just bouncing back, but bouncing back better. It involves integrating lessons learned into the fabric of the organization’s security posture and operational procedures, creating a more robust defense against future threats.

Monitoring, Detection, and Analysis

Keeping an eye on your digital environment is super important. It’s not just about putting up walls; you also need to know if someone’s trying to get over them or already inside. This section is all about how we watch what’s happening, spot trouble when it pops up, and figure out what’s going on.

Security Telemetry and Monitoring

Think of telemetry as the eyes and ears of your security system. It’s the constant stream of data – logs, network traffic, user actions, system events – that tells you what’s happening across your network and systems. Without good telemetry, you’re basically flying blind. You need to collect this data from everywhere: servers, workstations, network devices, cloud services, you name it. The trick is making sure it’s consistent and you have enough of it to actually see what’s going on. If you miss key data points, you might miss a critical alert.

Log Collection: Gathering event data from all your devices and applications.
Network Traffic Analysis: Watching data flow to spot unusual patterns.
Endpoint Activity Monitoring: Keeping tabs on what’s happening on individual computers and servers.
User Behavior Analytics: Looking for actions that are out of the ordinary for specific users.

Security Information and Event Management (SIEM)

So, you’ve got all this data from telemetry, but it’s a huge mess, right? That’s where SIEM systems come in. They’re like the central command center that pulls all that data together. SIEMs collect logs and events from all your different sources, then they try to make sense of it all. They use rules and sometimes fancy analytics to spot suspicious activity, correlate events that might be related, and then alert you. The goal is to turn a flood of data into actionable insights. It helps you see the bigger picture and connect the dots between seemingly unrelated events. Tuning these systems is key, though; too many false alarms, and your team will start ignoring them.

SIEM platforms are designed to aggregate and analyze security data from various sources, providing centralized visibility and enabling the detection of threats that might otherwise go unnoticed. Effective SIEM deployment requires careful configuration and ongoing maintenance to minimize alert fatigue and maximize detection accuracy.

Digital Forensics and Investigation

When something bad does happen, and you’ve detected it, you need to figure out exactly what went down. That’s where digital forensics comes in. It’s the process of collecting and analyzing digital evidence to understand the scope of an incident, how it happened, and who or what was involved. This isn’t just about finding the bad guys; it’s also about understanding how your defenses failed so you can fix them. You have to be super careful with the evidence, though. If you mess it up, it’s useless, especially if you need it for legal reasons. It’s a detailed process that requires specialized tools and skills to reconstruct events and identify the root cause. This helps in not just cleaning up the mess but also in preventing it from happening again. You can learn more about how to approach investigations.

Evidence Collection: Gathering digital artifacts without altering them.
Data Analysis: Reconstructing timelines and identifying attacker actions.
Reporting: Documenting findings for remediation and legal purposes.
Root Cause Analysis: Determining the underlying reason for the incident.

Putting It All Together

So, we’ve talked a lot about security assessments and reviews. It’s not just a one-time thing, you know? It’s more like an ongoing process. Think of it like checking the locks on your house regularly, not just when you move in. Keeping up with patches, checking configurations, and testing your apps – these are all parts of staying safe. And don’t forget the human side; training people to spot scams is just as important as the tech stuff. It’s all about building a strong defense that can handle whatever comes your way. It takes effort, sure, but it’s really about making sure your digital world stays protected.

Frequently Asked Questions

What is the main goal of cybersecurity?

The main goal of cybersecurity is to keep our digital stuff—like computers, phones, and online information—safe from bad actors who want to steal, break, or mess with it. It’s all about making sure things are private, correct, and always available when we need them.

Why is it important to update software regularly?

Updating software, also known as patching, is like fixing holes in a fence. Software often has small weaknesses that hackers can use to get into your systems. When you update, you’re patching those holes, making it much harder for them to break in.

What’s the difference between a threat and a vulnerability?

A vulnerability is like a weak spot, such as an unlocked door. A threat is someone or something that could take advantage of that weak spot, like a burglar. So, the unlocked door (vulnerability) makes it easier for the burglar (threat) to cause trouble.

How can regular security checks help a business?

Think of security checks like regular doctor visits. They help find potential problems before they become serious issues. By finding and fixing weaknesses early, businesses can prevent major data breaches, save money, and keep their customers’ trust.

What is ‘social engineering’ in cybersecurity?

Social engineering is when hackers trick people into giving up sensitive information or taking actions that help the hacker. They might pretend to be someone trustworthy, like a boss or tech support, to get you to click a bad link or share a password. It plays on human trust and emotions.

Why is controlling who gets access to what so important?

It’s crucial to make sure people only have access to the information and systems they absolutely need to do their job, and nothing more. This is called the ‘least privilege’ principle. If someone’s account gets stolen, the hacker won’t be able to access everything, limiting the damage.

What does ‘cloud security’ mean for users?

When you use cloud services like online storage or apps, cloud security means making sure that data is protected. It involves managing who can access it, keeping the systems secure, and making sure the cloud provider is also following good security practices.

How does a firewall help protect a computer network?

A firewall acts like a security guard for your network. It checks all the data trying to come in or go out and blocks anything that looks suspicious or doesn’t follow the rules you’ve set. This helps prevent unwanted visitors and dangerous traffic from reaching your computers.