Live data from Hacker News

Someone is running mass vulnerability scans, spoofing AI bots like ClaudeBot

knownagents.com

51–60 of 243 posts

Re: Someone is running mass vulnerability scans, spoofing AI bots like ClaudeBot

#51
Why would you voluntarily pretend to be a AI bot, when those have already a much higher chance of being blocked? Seems holly unproductive.

Best hypothesis I can come up with is to somehow make the AI companies look bad, but they seem to be doing an excellent job at that themselves already by scraping everyone hundreds of times per hour over and over.

Re: Someone is running mass vulnerability scans, spoofing AI bots like ClaudeBot

#52
post #19

Earlier quoted context omitted.

The easiest way to deal with the usual suspects is to just block the entire countries network range(s). There really is no reason they should be connecting to your home router anyway, and you lose nothing from blocking them. Sure their packets will still hit your router, but if they are dropped immediately at least you're not wasting a syn-ack on them.

I, temporarly, banned some ip range. I didn't find a source for pinpointing countries; though I am interested. Could you point me to some sources which, deterministically, resolve to some countries? To my knowledge you can not reliably identify countries by ip since this would be dependent on DNS servers. Though I am just a application programmer! Thanks in advance.

Routers got such a thing build in nowadays, just gotta enable it (not the ones from your ISP of course)

Re: Someone is running mass vulnerability scans, spoofing AI bots like ClaudeBot

#53

On average about 100 (TCP) requests hit my home router per minute doing various probing and scanning. Lots of checking for the telnet port obviously. Sometimes you can see a swarm of entirely different IPs scanning the full port range (probing the ports one-by-one). You'll see a lot of deepfield, censys-scanner, visionheight.com, shadowserver.io, etc., but also the usual suspects of Chinese or Russian IPs. With OpenW…

This is one reason I don’t mind that I’m behind CGNAT.

Re: Someone is running mass vulnerability scans, spoofing AI bots like ClaudeBot

#54
post #6

Every server with port 80/443 open has thousands of hits a day from random boxes looking for wordpress login pages. The only new thing is that they're pretending to be a different type of annoying bot. There's a new layer of sophistication and subterfuge, but it's the same junk traffic we've always dealt with.

I am always surprised that its considered legal. IMO that's the same as going on the street door by door and checking if one is left open to steal everything inside the house...

Re: Someone is running mass vulnerability scans, spoofing AI bots like ClaudeBot

#55
post #19

Earlier quoted context omitted.

The easiest way to deal with the usual suspects is to just block the entire countries network range(s). There really is no reason they should be connecting to your home router anyway, and you lose nothing from blocking them. Sure their packets will still hit your router, but if they are dropped immediately at least you're not wasting a syn-ack on them.

I, temporarly, banned some ip range. I didn't find a source for pinpointing countries; though I am interested. Could you point me to some sources which, deterministically, resolve to some countries? To my knowledge you can not reliably identify countries by ip since this would be dependent on DNS servers. Though I am just a application programmer! Thanks in advance.

Your router doesn't care about their DNS settings. IP addresses are very easy to tie back to countries. The reason they say it's not reliable is because it's trivial to spoof the country, but even so, a lot of attackers don't even bother. It's sort of like the Nigerian prince scam calls: if you're wise enough to block Russia, you're not worth their time.

Your firewall vendor should supply you with country lists, just select the known bad ones and drop their traffic. If you have a consumer grade router, you will probably have to configure the blocklists manually.

Re: Someone is running mass vulnerability scans, spoofing AI bots like ClaudeBot

#56
post #43

Earlier quoted context omitted.

Think about how many webmaster and business owners' egos are stroked by all the traffic they are getting, when in actuality they are often just serving thousands of bots.

I was insulted recently reading about the apparently thousands of hits per second the rest of you guys are getting. Even the bots are shunning me!

Get a letsencrypt cert, I always get a massive wave of vulnerability probers after renewing.

Re: Someone is running mass vulnerability scans, spoofing AI bots like ClaudeBot

#57
post #33

This kind of stuff is getting pretty wild, even for using something like Cloudflare it seems like a good idea to have another layer behind it that's non-cloudflare for when vulnerabilities are discovered.

What, like some kind of firewall?

Re: Someone is running mass vulnerability scans, spoofing AI bots like ClaudeBot

#58
post #54
post #6

Every server with port 80/443 open has thousands of hits a day from random boxes looking for wordpress login pages. The only new thing is that they're pretending to be a different type of annoying bot. There's a new layer of sophistication and subterfuge, but it's the same junk traffic we've always dealt with.

I am always surprised that its considered legal. IMO that's the same as going on the street door by door and checking if one is left open to steal everything inside the house...

Unauthorized access is not legal, it's just not enforced in the slightest.

Re: Someone is running mass vulnerability scans, spoofing AI bots like ClaudeBot

#59

Earlier quoted context omitted.

Is there an easy way to block any requests originating from VPS etc instead of residential/commercial IP from legitimate users ? I know cloudflare does a few things but I really want to figure out a way to block any request say at nginx or caddy (reverse proxy) from reaching origin servers if they are not from an IP that is not a VPS etc.

Yes but it’s not cheap. Maxmind and ipinfo etc sell a tier that tells you this information, then you can 403 based on it. But the price is nuts like $40,000 a year.

I work for IPinfo. We offer IPinfo Lite for free. With a little bit of time in identifying the ASNs, you can implement a decent way to block a good number of bots fairly easily using the free data alone.
Post reply on HN