A hosts file to prevent your computer from connecting to selected internet hosts. This is an easy and effective way to protect you from many types of spyware, reduces bandwidth use, blocks certain pop-up traps, prevents user tracking by way of "web bugs" embedded in spam, provides partial protection to IE from certain web-based exploits and blocks most advertising you would otherwise be subjected to on the internet.
Bouncer is a real time statistics and security engine written in PHP5. It analyses the browser or bot version, and detects eventual bad behaviors in order to prevent spam.
DomainKeys Identified Mail (DKIM) defines a mechanism by which email messages can be cryptographically signed, permitting a signing domain to claim responsibility for the introduction of a message into the mail stream.
