Malicious URLs Are Talking – Are You Listening?

404 pages aren’t always dead ends. Sometimes, they’re goldmines.

The 404urls repo is a simple, no-frills project that does one thing really well: it collects malicious URLs from honeypot traps and throws them into a file you can actually use.

Why Should You Care?

Because bots, scanners, and bad actors are hammering your infrastructure right now. Most of them get ignored. But that’s a missed opportunity. Every blocked request is a clue. A signal. A fingerprint of someone (or something) trying to mess with your stack.

404urls captures that—then hands it to you.

What’s Inside?

The core of the project is a growing urls.txt file packed with live, malicious URLs:

Exploit Kits
Scanner Targets (SQLi, XSS, RCE...)
Botnet Behavior
Credential Stuffing Attempts
C2 Infrastructure

Each one was triggered by a real honeypot, not scraped from some outdated threat feed.

How You Can Use It

→ Security teams: Feed the list into your firewall, proxy, or SIEM. Block bad traffic at the edge.
→ Developers: Monitor your logs for overlap. Spot patterns before they explode.
→ Hackers (the good kind): Use it to train detection systems or build smarter traps.

Bonus: it’s just a "curl" away. No API keys. No signup. No excuses.

curl https://raw.githubusercontent.com/simonjenny/404urls/main/urls.txt

It's Open – Contribute If You Can

Got your own honeypot? See something weird in your logs? PRs are welcome. Help us build a crowd-sourced intelligence layer that doesn’t suck.

Final Word

This isn’t just a list of bad links.

It’s a living snapshot of how attackers think. Use it to fortify your systems, spot attacks early, and stay one step ahead.

Because in this game, if you're not listening, you're already behind.

→ Get the repo and start defending smarter.