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Peerblock

PeerBlock is a personal firewall that lets users control which IP addresses can communicate with their computers. Originally based on the PeerGuardian 2 software, it helps protect privacy by blocking organizations from tracking one's internet activity and by preventing spyware and other malicious software from connecting to the user's computer. PeerBlock blocks incoming and outgoing connections based on lists of known bad or undesirable IP addresses, such as those belonging to anti-piracy groups, government agencies, advertising networks, or malware distributors. The software operates in the background and provides real-time updates for its blocklists by connecting directly to P2P blocklist management websites. It is often used in conjunction with file-sharing applications among privacy-conscious users but has also been criticized for creating a false sense of security due to limitations around list accuracy and effectiveness against sophisticated threat actors.

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