WOW! Thats crazy! I'm a pretty paranoid person and for good reason. Although, thats the problem with SR. There is little to no buyers protection just due to the nature of the business. In light of this, I'm now going to call my cousin who had a doctorate in cryptology and have him lock up my computer tighter than the pentagon.
Calling your friend to discuss cryptography over the phone doesn't rank very high on the "paranoia" list.
I'm going to get him to come over to my house thank you very much! I'm not stupid. No need to be condescending.