See this for why you're not safe behind tor nodes:
http://www.pcworld.com/article/2928752/tor-connections-to-hidden-services-could-be-easy-to-deanonymize.html
http://www.esecurityplanet.com/open-source-security/the-trouble-with-tor.html
https://www.techdirt.com/articles/20140401/17422126773/yes-federal-agents-can-identify-anonymous-tor-users-because-most-people-dont-know-how-to-be-anonymous.shtml
https://www.wired.com/2007/11/swedish-researc/
https://arstechnica.com/security/2014/11/law-enforcement-seized-tor-nodes-and-may-have-run-some-of-its-own/
https://medium.com/@a2d2/hacking-tor-cc3f2331d10f
https://www.theguardian.com/technology/2014/nov/14/government-hackers-tor-malware-attacks-onionduke-miniduke
https://darkwebnews.com/dark-web/spying-tor-nodes/
https://www.recordedfuture.com/stripping-tor-anonymity/
https://yro.slashdot.org/story/13/08/04/2054208/half-of-tor-sites-compromised-including-tormail
http://security.stackexchange.com/questions/37430/is-the-fact-that-tors-development-is-largely-government-funded-cause-for-concer
http://resources.infosecinstitute.com/good-tor-2014/
http://www.computerworld.com/article/2912234/cook-county-subpoenas-romanian-security-firm-a-tor-exit-node-operator-for-real-ip.html
https://threatpost.com/judge-confirms-dod-funded-research-to-decloak-tor-users/116464/
https://www.cnet.com/news/nsa-likely-targets-anybody-whos-tor-curious/

Tor was founded by the DOD (Department of War) and receives it's founding largely from the DOD still, the only reason Tor has been release to the public is to secure it by making the traffic now 100% Gov.
There's alternatives