Heartbleed bug and even the most popular online anonymity network Tor is also not spared from this bug. Tor Project leader as well as Tor’s co-developer Roger Dingledine, has rejected 380 vulnerable exit nodes. This means an attacker can grab the hidden information from the Tor network which is actually restricted by the Tor service, making it no more anonymising service. The U.S. intelligence agency also targeted by the NSA, revealed by a classified NSA document titled’Tor Stinks’leaked by Edward Snowden.
Source: https://thehackernews.com/2014/04/several-tor-exit-nodes-vulnerable-to.html