It feels like every day there’s a new headline about some kind of cyber threat. It can be a lot to keep up with, honestly. These digital dangers aren’t just for big companies either; they can affect anyone with an internet connection. Understanding the different types of cyber threats out there is the first step to staying safer online. We’re going to break down some of the major categories, so you can get a better handle on what’s going on in the digital world. It’s not about being scared, but about being aware.
Key Takeaways
- Malware, like viruses and ransomware, are programs designed to harm your devices or steal your data.
- Social engineering tricks people into giving up sensitive information or access, often through emails or fake messages.
- Denial of Service (DoS/DDoS) attacks aim to make websites or online services unavailable by overwhelming them with traffic.
- Data exfiltration and espionage are about stealing sensitive information for various malicious purposes.
- Understanding these cyber threats helps you take better steps to protect yourself and your information online.
Malware and Malicious Software Threats
Malware, short for malicious software, is a pretty common way for bad actors to mess with computers and networks. It’s basically any program designed to do harm, whether that’s stealing your information, messing up your files, or just slowing everything down to a crawl. Think of it as digital sabotage. These threats aren’t new, but they keep getting more sophisticated, making it harder for regular folks and even big companies to spot them.
Viruses and Worms
Viruses are like biological viruses; they attach themselves to legitimate files or programs. When you run that infected file, the virus code executes, and it can then spread to other files on your system. Worms, on the other hand, are a bit more independent. They can replicate themselves and spread across networks without needing to attach to another program or require any user interaction. This self-propagation makes worms particularly dangerous for quickly infecting many systems.
Trojans and Spyware
Trojans, named after the ancient Greek story, disguise themselves as useful or harmless software. You might download what looks like a free game or a helpful utility, but hidden inside is malicious code. Once activated, a Trojan can open up a backdoor for attackers, steal your data, or download other types of malware. Spyware is a specific type of malware focused on secretly gathering information about you. It can track your browsing habits, log your keystrokes, and steal login credentials, all without you knowing.
Ransomware and Rootkits
Ransomware is a particularly nasty threat that encrypts your files, making them inaccessible. The attackers then demand a ransom payment, usually in cryptocurrency, to provide the decryption key. It’s a high-stakes extortion tactic that can cripple businesses. Rootkits are designed for stealth. They are a set of tools that allow an attacker to gain privileged access to a computer while hiding their presence. Rootkits can conceal malicious software, processes, and network connections, making them incredibly difficult to detect and remove.
Advanced and Persistent Cyber Threats
Some cyber threats are like a slow burn, not a quick smash-and-grab. These are the advanced and persistent ones, and they can be particularly tricky to deal with. They aren’t just about getting in and out fast; they’re about staying hidden and achieving a specific, often long-term, goal.
Advanced Persistent Threats (APTs)
Think of APTs as the master strategists of the cyber world. These aren’t random attacks; they’re carefully planned and executed campaigns, often by well-funded groups or even nation-states. Their main objective is usually espionage, stealing valuable intellectual property, or causing significant disruption to critical operations. They don’t just use one tool; APTs employ a whole toolkit, moving stealthily through networks, escalating their privileges to gain deeper access, and siphoning off data over extended periods. It’s a marathon, not a sprint, designed to avoid detection for as long as possible.
Zero-Day Exploits
A zero-day exploit is a bit like a secret weapon. It targets a vulnerability in software or hardware that the developers don’t even know about yet, or haven’t had time to fix. Because there’s no patch available, these exploits are incredibly potent. Attackers can use them to gain initial access, install malware, or steal data before anyone even realizes there’s a problem. Detecting these often relies on watching for unusual behavior rather than looking for known malicious signatures.
Supply Chain Compromises
This is where trust gets exploited. Instead of attacking a company directly, attackers go after one of its suppliers or partners. Imagine a software vendor that provides updates to many companies. If an attacker compromises that vendor, they can sneak malicious code into a legitimate update, and suddenly, all the customers get infected. It’s a way to reach many targets indirectly by compromising a trusted link in the chain. This can affect everything from software updates to hardware components.
Here’s a look at how these threats can unfold:
| Threat Type | Primary Goal |
|---|---|
| Advanced Persistent Threats (APTs) | Espionage, IP theft, strategic disruption |
| Zero-Day Exploits | Initial access, malware deployment, data theft |
| Supply Chain Compromises | Widespread access via trusted third parties |
These types of threats often work together. An APT might use a zero-day exploit to get into a supplier’s network, then use that access to launch a supply chain attack against its customers. The persistence and sophistication make them a significant challenge for even well-defended organizations.
Social Engineering and Human-Factor Cyber Threats
When we talk about cyber threats, it’s easy to get caught up in the technical stuff – the code, the networks, the firewalls. But honestly, a huge chunk of security problems come down to us, the people. Social engineering and human-factor threats are all about playing on our natural tendencies, our trust, and sometimes, our fears. Attackers aren’t always trying to break through a digital wall; often, they’re just trying to get someone to open the door for them.
Phishing and Spear Phishing
Phishing is probably the most common type of social engineering. You get an email, a text, or a social media message that looks like it’s from a legitimate source – maybe your bank, a popular online store, or even your boss. The goal is to trick you into clicking a bad link, downloading a malicious attachment, or giving up sensitive information like passwords or credit card numbers. Spear phishing is just a more targeted version. Instead of a mass email blast, attackers do a little research and craft a message specifically for you or your organization, making it much harder to spot as fake.
- Key Tactics: Impersonation of trusted entities, creating a sense of urgency or fear, offering enticing rewards.
- Common Vectors: Email, SMS (smishing), voice calls (vishing), social media messages.
- Impact: Credential theft, financial loss, malware infection, identity theft.
Business Email Compromise (BEC)
This is a more sophisticated form of phishing that specifically targets businesses. Attackers often impersonate executives or trusted vendors. They might send an email that looks like it’s from the CEO asking an employee in finance to urgently wire money to a new account, or they might pretend to be a vendor and request updated payment details. These attacks can be incredibly convincing because they often involve a back-and-forth conversation and can lead to significant financial losses for a company.
BEC attacks are particularly damaging because they exploit established trust within an organization and often bypass technical security controls by using legitimate communication channels. The success of these attacks hinges on psychological manipulation rather than technical exploits.
Insider Threats
Not all threats come from the outside. An insider threat is when someone within an organization – an employee, a former employee, a contractor, or a business partner – uses their legitimate access to harm the company. This can be intentional, perhaps due to a grievance or financial gain, or it can be accidental, like an employee mistakenly sharing sensitive data or falling victim to a phishing scam. Managing insider threats involves a mix of technical controls, clear policies, and fostering a positive work environment.
| Type of Insider Threat | Description |
|---|---|
| Malicious | Intentional actions to steal data, disrupt systems, or cause damage. |
| Negligent | Unintentional actions due to carelessness, lack of awareness, or mistakes. |
| Compromised | An insider’s account or credentials are taken over by an external attacker. |
These human-factor threats are a constant challenge because they prey on our inherent behaviors and trust. Building a strong security culture through continuous awareness training and clear procedures is one of the most effective ways to defend against them.
Network and Service Disruption Cyber Threats
When we talk about cyber threats, it’s easy to focus on data theft or malware. But sometimes, the goal isn’t to steal anything; it’s simply to stop things from working. These are network and service disruption threats, and they can be just as damaging, if not more so, to businesses and individuals.
Denial of Service (DoS) Attacks
A Denial of Service (DoS) attack is like a single person repeatedly calling a business’s phone line, making it impossible for actual customers to get through. The attacker floods a target system or network with traffic or requests, overwhelming its resources so legitimate users can’t access it. Think of it as a digital traffic jam caused intentionally. While a single DoS attack can be disruptive, it’s often less sophisticated than its distributed counterpart.
Distributed Denial of Service (DDoS) Attacks
Now, imagine that instead of one person calling the phone line, thousands or even millions of people are calling simultaneously from all over the world. That’s a Distributed Denial of Service (DDoS) attack. Attackers use a network of compromised computers, often called a botnet, to launch a coordinated flood of traffic against a target. This makes it incredibly difficult to distinguish between legitimate and malicious traffic, and the sheer volume can bring down even robust systems. The motivations behind DDoS attacks vary widely, from extortion and political protest to simply causing chaos or acting as a distraction for other malicious activities.
- Overwhelming Traffic: Flooding the target with more requests than it can handle.
- Resource Exhaustion: Consuming all available bandwidth, processing power, or memory.
- Service Unavailability: Making websites, applications, or entire networks inaccessible.
Web Application Attacks
Web applications, the interfaces we use to interact with online services, are also prime targets. Attackers exploit coding flaws or weak configurations to disrupt their operation or gain unauthorized access. This can include techniques like SQL injection, where malicious code is inserted into database queries, or cross-site scripting (XSS), which injects harmful scripts into websites viewed by others. The goal might be to deface the site, steal user credentials, or disrupt the application’s functionality, impacting network security and user trust.
These attacks often target the application layer, exploiting how the software processes user input or manages sessions. They can be subtle, making them hard to detect until significant damage has occurred. The impact can range from minor annoyances to complete service shutdowns and data breaches.
| Attack Type | Primary Goal |
|---|---|
| DoS | Disrupt service availability |
| DDoS | Disrupt service availability |
| Web Application Attacks | Data theft, disruption, unauthorized access |
Data Compromise and Espionage Cyber Threats
This category of cyber threats focuses on the unauthorized access, theft, or exposure of sensitive information. It’s not just about stealing data; it’s often about gaining an advantage, whether financial, political, or competitive. Think of it as digital spying and theft, happening on a massive scale.
Data Exfiltration
Data exfiltration is the unauthorized transfer of data from a system or network. Attackers might use various methods to get this data out, often trying to make it look like normal network traffic. This could involve sending data through encrypted channels, hiding it within other files (steganography), or even just slowly leaking small amounts over time to avoid detection. The goal is to get sensitive information, like customer lists, intellectual property, or financial records, into the hands of unauthorized parties.
Common methods include:
- Using cloud storage services to transfer files.
- Embedding data within seemingly harmless image or audio files.
- Exploiting legitimate network protocols for covert data transfer.
- Leveraging compromised accounts to move data out.
The sheer volume of data generated daily makes detecting subtle exfiltration attempts a significant challenge for security teams. It requires sophisticated monitoring and analysis to spot unusual data flows.
Credential Theft
Stealing login credentials – usernames and passwords – is a direct pathway to accessing systems and data. Attackers use many tactics for this, from simple phishing emails that trick users into giving up their login details, to more advanced methods like ‘password spraying’ where they try common passwords across many accounts. Once they have credentials, they can often move freely within a network, impersonating legitimate users.
Key ways credentials are stolen:
- Phishing attacks: Deceptive emails or messages asking for login information.
- Malware: Keyloggers or other malicious software that capture keystrokes.
- Credential stuffing: Using lists of stolen credentials from previous breaches on other sites.
- Brute-force attacks: Trying many password combinations automatically.
Corporate Espionage
This is where cyber threats become a tool for competitive advantage. Corporate espionage involves stealing trade secrets, business plans, customer data, or other proprietary information from a rival company. Unlike general data theft, the motive here is specifically to gain an edge in the marketplace. This can be carried out by competitors directly, or sometimes by nation-states looking to bolster their own industries. The methods often overlap with data exfiltration and credential theft, but the intent is purely business-driven intelligence gathering.
Emerging and Specialized Cyber Threats
The cyber threat landscape is always shifting, and new, specialized dangers pop up regularly. These aren’t always the big, headline-grabbing attacks, but they can cause significant damage if not understood and addressed. Think of them as the niche but potent threats that require specific defenses.
Cryptojacking
This is where attackers secretly use your computer’s processing power to mine cryptocurrency. It’s like someone plugging into your electricity to run their own business without asking. You might notice your devices running slower, fans spinning up constantly, or your electricity bill going up. It’s not just annoying; it can degrade hardware over time and might be a sign that attackers have deeper access than just running a mining script.
Internet of Things (IoT) Threats
We’re surrounded by smart devices now – from thermostats and cameras to refrigerators. Many of these IoT devices weren’t built with security as a top priority. They often have weak default passwords, lack regular updates, or have open network ports. Attackers can find these weak points and use them to gain access to your network, spy on you, or even use the device as a stepping stone for larger attacks. Imagine a hacker taking control of your smart home security system – not a good thought.
Operational Technology (OT) Threats
This is a bit more industrial. OT systems control physical processes in places like power plants, manufacturing facilities, and water treatment plants. Historically, these systems were often isolated from the internet, but with increased connectivity for efficiency, they’ve become targets. An attack here isn’t just about stealing data; it could disrupt critical infrastructure, leading to widespread outages or even physical harm. Securing OT environments requires a different approach than traditional IT security because downtime can have immediate real-world consequences.
Here’s a quick look at how these threats differ:
| Threat Type | Primary Target | Potential Impact |
|---|---|---|
| Cryptojacking | Computing Resources | Performance degradation, increased costs |
| IoT Threats | Connected Devices | Network access, surveillance, botnet enlistment |
| OT Threats | Industrial Control Systems | Critical infrastructure disruption, physical damage |
These specialized threats highlight how attackers adapt to new technologies. As more devices become connected and systems become more complex, new avenues for exploitation emerge. Staying informed about these evolving dangers is key to maintaining a strong security posture.
Cloud and Endpoint Cyber Threats
The digital world we live in is increasingly interconnected, and that means more places for bad actors to try and get in. When we talk about cloud and endpoint threats, we’re looking at two major areas where these attacks happen. It’s not just about servers in a data center anymore; it’s about all the devices we use every day and the vast cloud services that store our data and run our applications.
Cloud Misconfigurations
This is a big one. Think of cloud services like AWS, Azure, or Google Cloud. They offer amazing flexibility, but if you don’t set them up just right, you can leave doors wide open. Attackers love finding misconfigured storage buckets or overly permissive access controls. It’s like leaving your house keys under the doormat. They’re not trying to break down the door; they’re just walking in because you made it easy. This is why understanding the shared responsibility model in the cloud is so important – the provider secures the infrastructure, but you’re responsible for how you use it.
Software as a Service (SaaS) Vulnerabilities
We all use SaaS applications like Office 365, Salesforce, or Slack. They’re convenient, but they also present risks. Attackers might try to take over your account, steal data stored within the service, or even use collaboration tools within the SaaS platform to launch phishing attacks against your employees. It’s a bit like a Trojan horse; the tool you use every day can become a weapon against you if not properly secured.
Mobile and Endpoint Device Risks
Your laptop, your phone, your tablet – these are all endpoints. They’re the devices that connect to networks and access data. Threats here can range from malicious apps on your phone to malware downloaded onto your laptop. The rise of remote work and ‘bring your own device’ (BYOD) policies means more personal devices are connecting to company resources, often with less robust security. Keeping these devices patched and protected with good endpoint security software is key.
Here’s a quick look at common endpoint threats:
- Malicious Apps: Apps that look legitimate but contain spyware or malware.
- Unsecured Wi-Fi: Connecting to public Wi-Fi can expose your device and data.
- Phishing Links: Clicking on suspicious links in emails or messages on any device.
- Outdated Software: Unpatched operating systems and applications are easy targets.
The attack surface for organizations has grown exponentially. It’s no longer just the perimeter network; it’s every device, every cloud service, and every third-party integration that can be a potential entry point for attackers. Staying ahead requires constant vigilance and a layered security approach.
Protecting these areas isn’t just about technology; it’s also about how people use it. Understanding these threats helps organizations build better defenses and stay safer in our connected world. For more on the evolving threat landscape, check out threat intelligence resources.
Threat Actor Motivations and Capabilities
When we talk about cyber threats, it’s easy to just focus on the technical side – the malware, the exploits, the network intrusions. But to really get a handle on what’s happening, we need to look at who is behind these attacks and why they’re doing it. Understanding the motivations and capabilities of threat actors is key to building better defenses.
Different groups have different reasons for launching cyberattacks. Some are all about the money, plain and simple. Others are driven by politics or ideology, and some are just trying to steal secrets for their own country or organization.
Cybercriminal Financial Gain
This is probably the most common driver. We’re talking about individuals or organized groups whose main goal is to make money. They might use ransomware to lock up your data and demand payment, steal credit card numbers, or trick people into sending them money through scams. It’s a business for them, and they’re always looking for new ways to profit from digital vulnerabilities.
- Ransomware: Encrypting data and demanding payment for its release.
- Credential Theft: Stealing login details to access financial accounts or sell on the dark web.
- Phishing/Scams: Tricking individuals into revealing sensitive information or sending money.
- Cryptojacking: Using compromised systems to mine cryptocurrency without permission.
These financially motivated actors often operate with a high degree of organization, sometimes using a ‘Ransomware-as-a-Service’ model where different groups specialize in developing the malware, carrying out the attacks, and handling the payment negotiations. This lowers the barrier to entry for less skilled criminals.
Nation-State Espionage and Sabotage
Then you have nation-state actors. These are often government-backed groups focused on espionage – stealing sensitive information from other countries, corporations, or critical infrastructure. They might also engage in sabotage, aiming to disrupt an adversary’s operations or sow discord. These attacks are typically highly sophisticated, well-funded, and persistent, often using custom tools and zero-day exploits.
- Espionage: Gathering intelligence on foreign governments, military operations, or economic activities.
- Sabotage: Disrupting critical infrastructure (like power grids or communication networks) or government functions.
- Information Warfare: Spreading disinformation or influencing public opinion in other countries.
Hacktivist Ideological Goals
Hacktivists are a bit different. Their attacks are usually driven by a political or social agenda. They might deface websites, leak sensitive documents, or launch denial-of-service attacks to protest against certain organizations or governments they disagree with. While their motivations are ideological, the impact can still be significant, causing disruption and reputational damage.
- Protests: Disrupting services or websites to draw attention to a cause.
- Information Leaks: Releasing documents or data to expose perceived wrongdoing.
- Website Defacement: Altering the appearance of a website to display a political message.
Understanding these different motivations helps us anticipate the types of attacks we might face and tailor our defenses accordingly. It’s not just about patching software; it’s about understanding the human element and the complex reasons behind cyber threats.
Vulnerability Exploitation Cyber Threats
Cyber threats often find their way in by taking advantage of weaknesses, or vulnerabilities, that exist within systems and software. It’s like leaving a window unlocked; it doesn’t matter how strong your door is if a side entrance is wide open. These aren’t usually direct attacks on your defenses, but rather clever ways to use existing flaws to get in.
Unpatched Software Vulnerabilities
This is probably the most common way attackers get a foothold. Software, whether it’s your operating system, a web browser, or a business application, can have bugs. Developers release updates, often called patches, to fix these bugs. If an organization doesn’t apply these patches promptly, the known flaw remains, creating an open door for attackers. They can scan networks for systems running outdated software and then use publicly known methods to exploit those specific vulnerabilities. It’s a race against time, and unfortunately, many organizations fall behind on patching.
- The longer a vulnerability remains unpatched, the higher the risk of exploitation.
Weak Authentication and Authorization
How do you prove you are who you say you are, and what are you allowed to do once you’re in? Weaknesses here are a goldmine for attackers. This includes things like simple, easily guessable passwords, reusing passwords across multiple sites, or not having multi-factor authentication (MFA) enabled. Once an attacker gets hold of valid credentials, they can often access systems as if they were a legitimate user. Authorization issues, like giving users more access than they actually need (violating the principle of least privilege), also play a big role. This allows attackers to move around and access more sensitive data once they’ve gained initial entry.
Here are some common issues:
- Password Weaknesses: Short, common, or reused passwords.
- Lack of MFA: Not requiring a second form of verification beyond a password.
- Excessive Permissions: Users having more access rights than their job requires.
- Insecure Credential Storage: Storing passwords or sensitive tokens without proper protection.
Insecure API Exploitation
APIs (Application Programming Interfaces) are the connectors that allow different software applications to talk to each other. They’re incredibly useful for modern development, but if not secured properly, they become a major vulnerability. Attackers can target APIs to gain unauthorized access to data, disrupt services, or even take control of systems. This often happens because APIs might not have strong enough authentication, they might expose too much data, or they might be susceptible to injection attacks, similar to how web applications can be attacked. As more services rely on interconnected APIs, securing them becomes increasingly important for overall cybersecurity.
Exploiting vulnerabilities is less about breaking down a wall and more about finding a key that was left in the lock or a window that was never closed. It highlights the importance of consistent maintenance and careful access control.
Cyber Threats Targeting Infrastructure
When we talk about cyber threats, it’s easy to focus on individual computers or specific software. But attackers are also very interested in the underlying systems that keep everything running – the infrastructure. This isn’t just about servers in a data center; it includes networks, communication lines, and even the systems that control physical processes.
Lateral Movement Techniques
Once an attacker gets a foothold in a network, they don’t usually stop there. They want to move around, find more valuable targets, and gain deeper access. This is where lateral movement comes in. It’s like a burglar picking a lock on the front door and then quietly exploring the rest of the house, looking for the safe or the master bedroom. Attackers use various methods to hop from one system to another. This could involve exploiting trust relationships between machines, using stolen credentials to log into other systems, or finding unpatched vulnerabilities on internal servers. The goal is to spread their access as widely as possible without being detected. Think of it as spreading a digital infection throughout the entire network.
Privilege Escalation Tactics
Getting into a system is one thing, but having limited access is another. Attackers often start with basic user privileges, which don’t allow them to do much damage or access sensitive data. That’s where privilege escalation comes into play. This is the process of gaining higher levels of access on a system or network. It’s like getting into a building with a basic employee badge, and then finding a way to get a manager’s keycard. Attackers might exploit software flaws, guess weak passwords, or trick users into granting them more permissions. Successfully escalating privileges can turn a minor intrusion into a full-blown compromise, giving attackers control over critical systems and data. This is a common step in more complex attacks, allowing them to achieve their ultimate objectives.
Persistence Mechanisms
Attackers don’t want their access to disappear the moment a system reboots or a user logs off. They need ways to stay in the network for the long haul, even if their initial entry point is discovered. This is achieved through persistence mechanisms. These are essentially backdoors or hidden ways for the attacker to regain access later. They might install hidden software, create new user accounts that only they know about, or modify system startup processes. The aim is to ensure that even after security teams clean up an initial breach, the attacker can still get back in. This is particularly concerning for espionage or long-term data theft operations, where maintaining a hidden presence is key.
Attackers often combine these techniques. They might use a phishing email to get initial access (like a weak password), then use that access to move laterally to a more critical server, escalate their privileges on that server to gain administrative control, and finally install persistence mechanisms to ensure they can always get back in. It’s a step-by-step process, and understanding each part helps us build better defenses. For instance, strong network segmentation can limit lateral movement, while robust identity management and regular patching can prevent privilege escalation. Keeping systems updated is a big part of this, as many attacks rely on known flaws that have already been fixed in newer versions. You can find more information on general cybersecurity threats and best practices to combat them.
Staying Ahead in the Digital Arms Race
So, we’ve looked at a bunch of different ways bad actors try to mess with our digital stuff. From sneaky malware to big, organized attacks, it’s clear the threats are always changing. It’s not just about having the latest tech, though. Understanding how these threats work, and remembering that people are often the first line of defense (or the weakest link, unfortunately), is super important. Keeping systems updated, being careful about what you click, and having a plan for when things go wrong are all part of staying safer. It’s a constant effort, kind of like trying to keep your house secure – you do what you can, and you stay aware.
Frequently Asked Questions
What is malware and how does it work?
Malware is like a digital sickness for computers and devices. It’s bad software that bad guys create to mess things up, steal your information, or take control of your device. Think of viruses that spread like a cold, worms that travel through networks, or trojans that look like helpful programs but are actually harmful.
What’s the difference between a virus and a worm?
Both viruses and worms are types of malware, but they spread differently. A virus needs to attach itself to another file, like a document or program, to spread. A worm is more independent; it can copy itself and spread across networks all by itself, often much faster than a virus.
What is ransomware and why is it so scary?
Ransomware is a particularly nasty type of malware. It locks up your important files by scrambling them (encrypting them) so you can’t open them. Then, the attackers demand money, usually in cryptocurrency, to give you the key to unlock your files. It’s like a digital kidnapping of your data.
What are social engineering attacks?
Social engineering attacks are all about tricking people. Instead of hacking into systems with code, attackers use psychology to fool you into giving them information or access. Phishing emails that pretend to be from your bank or a popular website are a common example. They play on trust and urgency.
What is a ‘zero-day’ exploit?
A zero-day exploit is like a secret weapon for hackers. It takes advantage of a security flaw in software that even the software creators don’t know about yet, or haven’t had time to fix. Because there’s no defense ready, these attacks can be very successful.
What’s the danger of ‘insider threats’?
Insider threats come from people who already have access to a system, like employees or contractors. They might intentionally cause harm, steal data, or accidentally make a mistake that opens the door for attackers. It’s tricky because they have legitimate access, making their actions harder to spot.
How do Denial of Service (DoS) attacks work?
Denial of Service (DoS) attacks try to shut down a website or online service by flooding it with so much fake traffic that real users can’t get through. Imagine a huge crowd blocking the entrance to a store – that’s what a DoS attack does to a website or server.
What is data exfiltration?
Data exfiltration is a fancy term for stealing sensitive information. Hackers sneak into a system and copy out valuable data, like personal details, company secrets, or financial information, without anyone noticing. They try to be stealthy, often sending the data out in small, hidden chunks.