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ShellBot Uses Hex IPs to Evade Detection in Attacks on Linux SSH Servers
(thehackernews.com)
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this post was submitted on 12 Oct 2023
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Yeah they're not getting in with my current setup anyway, I just prefer to also boot the failed attempts so I'm not relying on a single layer of protection -- you never know what future security leak might rear its ugly head. I did get one issue with fail2ban fixed though so it is once again properly dropping what it can, but this bot seems to be really persistent and has quite a long list of available IPs to work from.