Tor, the secure browser that leaves your traffic and identity as anonymous as you like, is having some difficulty. A cluster of servers in the Netherlands has been taken offline, and it’s not immediately clear why. It’s also not known if it was the work of law enforcement, or some rogue agency. It could also be a single black-hat hacker who is tying to disrupt service. Thomas White, who runs a large portion of exit nodes for Tor, says they’ve lost “all servers” under that particular ISP.