No. Just don't confuse your browser for the TOR browser at any point, it can be easy to do if you're in the habit of frequently checking your email...There's all kinds of programs to overwrite HDs.But there is actually little evidence to suggest that 35 writes are better than 1 over the entire HD. The study that everybody refers to, i.e. the Gutmann Method, is usually taken out of context. Just overwrite once, and then if you feel you need more security, smash the platters with something heavy and throw them away. There has never actually been a recorded incidence of overwritten data being recovered that I am aware of. Also, you get some awesome new fridge magnets. <-- ProtipThe business of overwriting many many times, is somewhat of an urban myth in technology circles. Most IT geeks know overwriting once isn't enough, but relatively few know it really doesn't matter, all the papers that followed Gutmann's paper were extrapolating about a theoretical possibility and it became Chinese Whispers after that. By all means, overwrite as many times as you please, but it's a case of diminishing returns.