Last Friday, the Tor Project blog posted about a possible threat that some of its servers would be seized in an attempt to incapacitate or hijack the Tor network. Over the weekend, a group of "exit node" servers in a Dutch datacenter went down, and then came back online. The service, a volunteer network of relays aiming to provide anonymity and security, says it was warned of suspicious activity that may have been instigated by law enforcement.