Tor is secure, but not absolutely anonymous. If the entry relay and exit node are controlled by the same party then they know where you came from and where you'

Tor is secure, but not absolutely anonymous. If the entry relay and exit node are controlled by the same party then they know where you came from and where you're going. Given anyone can do such nodes and it's relatively inexpensive to get gigabit lines nowadays - it's no doubt a good number of the nodes are owned by various three letter agencies. Bandwidth isn't expensive on taxpayer dollars, but it is expensive for individuals. Also because a lot of relays go outside the U.S. the metadata can be collected and stored at will.