02-05-2010
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How were UNIX machines taken over by SPAMMERS?
Hello,
Three of our machines at work were sending out SPAM on the internet. 2 of them were so old I knew that the hackers just exploited the vulnerabilities in the old systems. The cause of concern is that one one of the machines is a new Centos 5.3 box.The only proof we have is that 4-6 emails were send by root on this system whereas the other two had 30,000 emails sent.
We are running sendmail-8.13.8-2.el5 on the Centos 5.3 box. It is configured to listen just locally so that it is secure. Do you think root was compromised on this CENTOS 5.3 box?