February 11, 2026 Source: Krebs on Security 3 min read · 683 words

Kimwolf Botnet Swamps Anonymity Network I2P

Botnet Kimwolf приховується в I2P — і це працює

Kimwolf Botnet Is Using I2P to Hide—And It's Working

A week-long assault on the I2P anonymity network by the botnet/" class="internal-link">Kimwolf IoT botnet just proved something we all suspected: when attackers want to disappear, they're going to disappear. According to reporting from Krebs on Security, botmasters behind Kimwolf have been actively leveraging I2P's privacy infrastructure to stash command-and-control servers away from researchers and law enforcement. This isn't some theoretical vulnerability. It's happening right now.

The real kicker? Kimwolf's already infected who knows how many IoT devices.

Breaking It Down

Let's start with what we're dealing with here. Kimwolf is an IoT botnet—meaning it infects internet-connected devices like routers, cameras, DVRs, and smart home gadgets that most people forget they own. Once compromised, these devices become foot soldiers in a massive distributed network under remote control.

What makes this campaign particularly nasty is the operational security angle. Rather than hosting their command infrastructure on traditional hosting providers (where takedown notices actually work), the botmasters tunneled everything through I2P—an anonymity network similar to Tor but less well-known and consequently less monitored. Krebs on Security documented how this network disruption unfolded over several days, with attackers essentially using I2P as their personal safe house.

And then it got worse.

The sheer volume of botnet traffic was so aggressive it actually degraded I2P's performance for legitimate users who rely on the network for actual privacy work. When you're powerful enough to accidentally DoS an entire anonymity network, you've got a serious problem on your hands.

The Technical Side

Here's how this works at ground level. IoT devices typically ship with weak default credentials—admin/admin, anyone?—and outdated firmware full of known vulnerabilities. Once Kimwolf gains initial access, it's trivial to maintain persistence. The botnet then uses I2P's tunneling protocols to communicate with command servers without exposing the actual infrastructure.

Why does I2P matter here specifically?

Because I2P is decentralized. You can't just take down a central server and cripple the whole operation. The network routes traffic through multiple layers of encryption, making attribution nearly impossible. For botmasters, it's paradise. For security researchers trying to track IoT cyber security threats, it's a nightmare.

The volume tells you everything. An IoT vulnerability assessment of any major network would show thousands of exposed devices. Once botnet software takes hold, you're looking at a distributed denial-of-service attack capability that spans continents. According to various IoT cyber attacks statistics, we're talking about millions of vulnerable endpoints globally.

Who's Affected

Essentially? Anyone with IoT devices running outdated firmware.

Consumers, small businesses, enterprises—doesn't matter. If it's got an IP address and hasn't been patched in the last year or two, Kimwolf likely wants it. Frankly, the scope here is terrifying because most people don't even know what IoT devices they own, let alone maintain them. Your router's been running the same firmware for three years? Congratulations, you might be a Kimwolf node.

The I2P network disruption is actually the canary in the coal mine. It tells us the botnet's large enough and active enough to cause measurable interference with infrastructure. That's scale.

What To Do Now

Start by checking your devices. Seriously. Log into your router's admin panel—most are still running default passwords—and check the firmware version. Compare it against the manufacturer's latest release. If there's a gap, update immediately. Same for any security cameras, NAS boxes, or other IoT hardware you're running.

Change default credentials on everything.

If you're considering a career in IoT cyber security—whether through an IoT cyber security course or IoT cyber security jobs—this campaign demonstrates exactly why the field's becoming critical. There's legitimate work protecting infrastructure against botnets, and organizations are starting to take it seriously.

For the paranoid: an IoT vulnerability database check can reveal whether your specific hardware has known exploits. Run one. Know your risk surface. Don't just assume your devices are fine because you got them last year.

The uncomfortable truth is that IoT cyber security is largely on you. Manufacturers won't force updates. ISPs won't block compromised traffic. You're the first and last line of defense between your devices and becoming part of someone else's botnet army.

Read original article →

// FAQ

Could my IoT device be infected with Kimwolf right now?

If your router, camera, DVR, or smart home device hasn't been updated in months and uses default credentials, it's genuinely at risk. Check your device's admin interface and compare firmware versions against the manufacturer's latest release.

Why did botmasters choose I2P instead of the Tor network?

I2P is decentralized and harder to monitor than Tor, making it more resilient against takedown efforts. It also provides built-in peer-to-peer capabilities perfect for distributed botnet infrastructure, which is exactly what Kimwolf needed.

Does this Kimwolf campaign affect my personal data or accounts?

Not directly, but if your device is compromised, it becomes part of a botnet used for attacks against others. You're also vulnerable to lateral network attacks that could expose your personal data if the infected device sits on your home network.

Concerned about your project's security? Run an automated pentest with AISEC — AI-powered scanner with expert verification. Go to dashboard →