Malware hunting tips (Linux based server)
Sometimes, in a very rare case, your website might be infected or injected with a bad code@malware. If such case happen to you, (It happened to me few times since I’m very lazy to update myown blog cms patches,update and etc. haha) here is some tools that I can suggest to “hunt” for bad code.
Website : (http://www.rfxn.com/projects/linux-malware-detect/)
I used this for quite sometimes. Especially, If a non-technical client request my help to overcome their problem when Google show warn when people visit their website. However, this tools is useful when you have full access to the Linux server as root. If you are subscribing to a VPS or dedicated server, you might do this by installing this tool through CLI.
2. Sucuri SiteCheck
Website : http://sitecheck.sucuri.net/scanner/

This might be usefull sometimes. It crawl for your website files and suggest you location and files or code that might be injected to your website. The rest step is, hunting them as suggested by those tools.

