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Just for security, check you ports. Download Nmap http://www.insecure.org/nmap/ (If you already dont have it). Its an excellent tool. Check for your ports like this:
It will give you a list of open ports..close unnecessary ports.
i don't quite understand what you getting at?
lets just put it this way:
so, by convention UID's of 499 (depending on distro it may be 500) or less are special system UID's, and roots' UID is 0, Regular users get UID's starting at 500, (again, depending on distro it may start at 501)
I am quite new to linux and I have to ask for some help here.
Recently, I browse into my home directory and noticed there were some
suspicious hidden files there. One such file is .user60.db. I think I might
be hacked by an intruder.
I have removed the said file with bash command rm .user60.db since then.
Would like to receive some comments and perhaps some good news!
Thank you very much.
If ever you are in doubt of whether you are being hacked or not, take the machine off line immediately. That's the first thing to do, after that it's all details, but that's the single most important thing to do, cut the cord.
After that, follow unSpawns many threads on this, just do a search for "being hacked" or check out the main sticky thread in the Security section.