Honestly Tor so far seems to be fine by itself. The people who are attacking it and pwning it are really really smart people who generally have lots of formal and informal education. But then they throw the whitepapers out there, and it is a lot easier to implement an attack from a whitepaper than it is to come up with it on your own. Also Tor generally tries to make attacks against it harder when they are discovered, but often times they are putting a bandaid over a deep wound. Yes Tor is weak to a lot of technical attacks, yes hidden services can be traced pretty damn easily (especially by an attacker who can order passive surveillance at specific points), no Tor will not keep you anonymous for very long from an attacker with a bit of money and know how, and there are a million and one ways that it can be attacked and pwnt. No, nobody except for academic researchers (and signals intelligence agencies, but they don't apparently act on the intelligence gathered, or particularly give a tenth of a shit about even highly criminal Tor users) have apparently done any attacks against Tor that resulted in hidden services being traced or clients deanonymized (although LE have hacked hidden services to trace them they never pwnt Tor directly so far), yes Tor is the best (implemented) system for low latency anonymity, no Tor can not even begin to compare to the anonymity that could be offered by high latency solutions, no there are not any cutting edge high latency systems that have been implemented, the majority of this sort of shit never leaves the whitepaper or research lab (attacks and defenses) (except for prob by intelligence agencies, and no they don't give a shit about you) (even though you should never assume that attackers interested in you are too stupid to do interesting things) and nobody knows anyone who was busted via Tor being pwnt (and there are case studies that show people who used Tor getting away from the FBI and Interpol even with significant international resources focused on tracing them). That pretty much sums it up as one big huge run on sentence. If you take away "Tor is secure!" from this or "Tor is insecure!" from this will largely depend on your outlook on things / personality type (and perhaps who you think is after you....secure from who/what is a much better question after all...)