I don't believe Verizon would "discourage" Tor. It would either block it completely, or continue to allow it.<p>The tiny percentage of Tor users don't concern Verizon. The miniscule loss of advertising revenue isn't as big of an issue as the bad publicity that messing with TOR would get them from media.<p>VPN users might be a thing they get concerned about, at some point, but I'd expect them to come out with a VPN service if that was the case.<p>So I expect this will be traced to some kind of incompetence or error, not a deliberate effort.