- The privacy-centric Tor network has adopted a proof-of-work (PoW) mechanism, akin to Bitcoin's security model, to counter denial of service (DoS) attacks that have troubled the network since mid-2022.
- Unlike Bitcoin, Tor's PoW implementation is customized to fight network attacks. It's dynamic, diverging from fixed targets. Users bid using PoW effort rather than directly targeting a static point.
- This change aims to make attackers invest more computational resources in their assaults, making it advantageous for legitimate traffic.
- Tor's motivation for adopting PoW is to mitigate DoS attacks and bolster the network's security against malicious disruptions.
