So is it now "guaranteed", that TOR is secure? And how many "guarantees" does one need in order to be "guaranteed" security whilst browsing? [...]and they provide additional guarantees that readers are connected securely to our website.[...]
Disable Javascript. Enabling it makes you traceable. Run a Temporary profile in Firefox - otherwise cached images will make you traceable. Connect from your neighbors wifi (the further from your home the better, really) with a spoofed MAC address running from a write-locked USB live distro - this ensures you're protected from the unknown unknowns.
What're the equivalent or similar features in other browsers (e.g. Chrome)? Incognito mode?