Researchers explained that carrying out attacks against the most used default Tor bridges would cost threat actors $17,000 per month.
According to security researchers Rob Jansen from the U.S. Naval Research Laboratory, and Tavish Vaidya and Micah Sherr from Georgetown University, launching denial-of-service (DoS) attacks against most commonly used default Tor bridges would cost attackers $17,000 per month.
DoS attacks could be used for preventing users to access the popular anonymizing network or to carry out attacks to de-anonymize Tor users with techniques such as traffic correlation.
For a modest sum, threat actors could target Tor bridges saturating their resources and causing significant degradation of network performance.