What is a Botnet?

If you've ever heard terms like "cyberattack," "ransomware," or "DDoS," chances are you've also heard the word "botnet" thrown around. But what exactly is a botnet, and why is it such a big deal in cybersecurity?

What is a Botnet?

A botnet (short for "robot network") is a group of internet-connected devices that have been infected with malware and are being controlled remotely by a hacker. These devices become what's known as "bots" or "zombies" because they follow the attacker's commands, often without the owner's knowledge.

Botnets can include all kinds of devices, like:

• Personal computers
• Smartphones
• Routers
• Internet of Things (IoT) gadgets like smart TVs, cameras, and even fridges

Once part of a botnet, these devices can be weaponized for large-scale attacks.

What Do Cybercriminals Use Botnets For?

Botnets are incredibly versatile tools in a hacker's toolbox. Here are a few of the most common uses:

• Brute Force Attacks: Trying many username-password combinations across different accounts until they find a match.
• DDoS Attacks: Flooding a website or service with so much traffic that it crashes.
• Spam Campaigns: Sending massive volumes of junk or phishing emails.
• Malware Distribution: Spreading ransomware, spyware, or other malicious programs.
• Cryptomining: Using your device's computing power to mine cryptocurrency for the hacker.

How Many Botnets Are Out There?

It’s nearly impossible to count the exact number, but experts estimate that there are hundreds of active botnets at any given moment, with millions of infected devices involved. Some famous botnets include:

• Mirai: Infected IoT devices to launch a record-breaking DDoS attack in 2016.
• Emotet: Evolved from banking malware into a massive spam and malware distributor.
• Necurs: Known for distributing ransomware and spam to millions of victims.

What Can You Do To Protect Yourself?

• Keep your devices updated with the latest software patches.
• Use strong, unique passwords and enable two-factor authentication.
• Install antivirus and anti-malware software.
• Be cautious when clicking on links or downloading attachments.
• Avoid using default credentials on devices like routers or security cameras.

Final Thoughts

Botnets may be working silently in the background, but they are a major threat to global cybersecurity. Understanding what they are and how they work is the first step in defending yourself and your business.

Stay informed. Stay secure.

Have questions about protecting your organization from threats like botnets? Contact us at Prowtect — we’re here to help.