> the most effective way to compromise someone's connection through The Onion Router is to control their entrance and exit nodes

This seems like a big problem since there’s not much incentive, other than altruism, for most people to run Tor nodes, especially exit nodes which will draw a lot of unwanted attention from law enforcement.

On the other hand, intelligence agencies have a large incentive to control a majority of Tor nodes.

It’s also pretty telling that Tor was partially developed and funded by the US government.