[Gathering6678]

Correct me if I'm wrong, but this feels like a long-winded way of saying: if an adversary could control a significant portion of relays without being found out and for a not-insignificant period of time, it could defeat Tor.

Is it correct? Probably. Does it justify the "Not secure at all" indictment? No.

[bnl_umass]

The website actually states “not very secure at all”. This hacker news submission changed the title.

[Gathering6678]

The calculator also misleads in another direction, in that it could underestimate the probability of failure by only considering the "takeover" scenario, while I think it is much more likely to be defeated via other OpSec failures.

[bnl_umass]

The “conclusions” section of the site makes this same point.