There are many different types of threats to the security of your site, webserver and users. They can come in the form of information theft, spam, scams, malware, and defacement. Luckily there are many tools (mostly open source) at our disposal! Spamassassin is a awesome email filter. ClamAV is an anti-virus for Linux that will scan emails, upload directories and anything else you need it to. Mod_security is the last word in site/server security, providing control over almost all aspects of input and output. Last but not least CSF is an amazing firewall for port control and blocking. These tools alone or combined will help you get a feeling of control and help you sleep better at night.
