Signs That Your Machine May Be Compromised

Here are some of the signs to look for which may indicate your machine is being compromised.

• Your web site is being defaced, or have javascript inserted that send users to another site.
  
• Your machine is listening on some new or unknown ports.
  
• The logs suddenly become much larger than what they usually are.
• The logs are not logging any thing.
• Disk space utilization of your machine suddenly increases.
• Network utilization of your machine suddenly increases.
• Your machine runs unusually slow.
  
• Someone reported that your machine doing some kind of attacks on theirs, or spamming, or hosting copyrighted movies, etc.
• Google search for "viagra site:yourwebsite.com" or other keyword. Result came out positive, but you did not post those pages there.