malware

• Online Malware Scanner for websites
• Scan a folder with clamscan
• maldet
• https://opentip.kaspersky.com
• https://sitecheck.sucuri.net
• https://bitninja.com/

Tools

Forums

http://www.virusinfo.info

http://www.rootkit.com

http://www.gmer.net

Blogs

http://www.youtube.com/watch?v=Q5cT3YHKVsY