Attacking Tor: What it Takes to Disrupt the Popular Onion Routing Network
Launching denial-of-service (DoS) attacks against Tor’s most commonly used default bridges and flooding them would cost attackers around $17,000 per month, researchers have discovered.
Read more: Attacking Tor: What it Takes to Disrupt the Popular Onion Routing Network
Story added 21. August 2019, content source with full text you can find at link above.