The Tor network may be attacked in the coming days.

The support team for the distributed anonymization service Tor reports on its blog that they have become aware of a forthcoming attempt to disable the network by shutting down central servers, which are called “directory authorities” and distributing a list of transit nodes to connecting nodes. The team is taking the steps necessary to ensure the operation of the network.

According to Tor sources, these are the following 10 servers:

 IP address Who owns the block containing this IP? 
 128.31.0.39 AS3 Massachusetts Institute of Technology 
 86.59.21.38 AS8437 Tele2 Telecommunication GmbH 
 194.109.206.212 AS3265 XS4ALL Internet BV
 82.94.251.203 AS3265 XS4ALL Internet BV 
 131.188.40.189 AS680 Verein zur Foerderung eines Deutschen Forschungsnetzes eV 
 193.23.244.244 AS50472 Chaos Computer Club eV 
 208.83.223.34 AS40475 Applied Operations, LLC 
 171.25.193.9 AS198093 Foreningen for digital fri- och rattigheter 
 154.35.32.5 AS14987 Rethem Hosting LLC 
 199.254.238.52 AS16652 Riseup Networks

Servers are located in Austria, Germany, Holland, Sweden and the USA, and shutting down more than half of them will lead to network blocking. Further, according to Arma, one of the Tor developers:

“The Tor network provides a safe haven from surveillance and censorship to millions of people living under repressive regimes, including human rights activists. People on a daily basis use Tor to conduct their business without fear that their activities and words posted online will be tracked and used against them. Millions of other users simply use Tor in public internet cafes to browse sites safely. ”