nvakada wrote:Just gone through "http://www.catb.org/esr/faqs/smart-questions.html"
I've done a huge mistake by posting this question. Lesson learnt..

well, good that you read it, but "huge mistake" is a little over the top.

nvakada wrote:Once you are logged into the server, you should search for a running process that shouldn't be there
i think this is not meant literally, but more as a suggestion:
have a look at the processes running, find one that looks suspicious.
you can use the 'top' command for that.
you could install another debian server in a vm to see what
should be there, but my guess is it will just pop out at you.
PS: "
Running process" is another important hint