Date: Mon, 02 Dec 2002 23:49:33 -0600 From: neal r <neallist@wispair.net> To: stabilizer@klentaq.com Cc: freebsd-security@FreeBSD.ORG Subject: Re: psybnc and IRC hack Message-ID: <3DEC45ED.CFA0FF57@wispair.net> References: <20021202123616.A33705@klentaq.com> <009101c29a34$1b96f4d0$0301a8c0@prime>
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This doesn't belong on freebsd-security. Read this first: http://www.FreeBSD.org/doc/en_US.ISO8859-1/books/handbook/security.html If you're still confused get on an Undernet IRC server, go to #freebsdhelp, and ask for assistance. Its best to show between 18:00 and 24:00 EST from my experience. There are probably other places you could check, this one I frequent and I know they'll help new people. Charles Swiger wrote: > [ This probably belongs on freebsd-security, instead... ] > > Wayne M Barnes wrote: > > How can I best recover from, and defend myself from, a hacker > > who breaks into my system and runs a program called psybnc > > without my permission? I think he is using my system as a > > front/slave. > > Yes. Unless you installed an IRC bouncer-- or whatever it was being used for-- > yourself, it's a safe bet that your machine was hacked. You haven't identified > much about the system-- OS version, what service was compromised (if you know, > and you should investigate that), as well as form an incident timeline. > > The best way to recover is to backup the compromised system, for recovery of > your data and later forensics if you (or your ISP) chooses to investigate > further. > > Reinstall the latest version of FreeBSD from a known-good image, possibly using > CVSUP to upgrade to -STABLE or the security branch for your version > (RELENG_4_7?). > > Then restore your data (after making sure nothing was compromised...that means > do not copy date, especially executables without checking them against prior > backups). > > > For now, I have killed psybnc, deleted the directory of stuff > > that he put in, and changed my password. Is that any good? > > It's a good starting point, yes, but it certainly isn't sufficient. > > > Can there be a real vaccination built in to FreeBSD? > > Yes. It's easy to compare your system against the software from the OS install > disk; where many people encounter problems is with the changes they've made > afterwards themselves. How complete are your backups? > > -Chuck > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-security" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message
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