Improve your online privacy and security with PeerBlock, a free and open-source personal firewall software. PeerBlock lets you control who your computer "talks to" on the internet by blocking IP addresses known to be harmful or undesirable. With PeerBlock, you can avoid risks from hackers, malware, spyware, adware, and identity theft. It's especially useful for P2P file-sharing users who want to avoid legal actions from copyright holders, malware infections, or surveillance. Download PeerBlock from its official website, choose which lists of IP addresses you want to block, and start using it right away.