There is always a trade-off between usability &#x2F; efficiency and security, and this trade-off has to take into account the attacker model.<p>Tor is a low-latency network by design, so right from the start it gives up some security to be more usable instead. That probably still works against many attackers, including some state agencies, although not the most powerful.<p>We should also keep the bigger picture in mind. Sure, if the NSA really wants to know everything about you, it&#x27;s going to keep a record of your outgoing packets, and match it with packets from exit nodes to have all your metadata. But how much is it going to cost? How does it scale? I think we can assume that if everyone were to use Tor, mass surveillance would be at least far more costly. Each new user adds noise in the correlation measures.<p>I can also argue that if you use Tor from your home or any location that is associated to you in any way, you&#x27;re not really trying to avoid target surveillance by your government.