There must have been something else going on here
There must have been something else going on here. To have had so many high traffic sites successfully socially engineered at about the same time by (presumably) the same group just doesn't pass my smell test. The addendum regarding 'just the (no) fax ma'am' further muddies the water.
I had to deal with Register.com about a decade ago to access a client's lost DNS account password. All it took was a phone call from Canada to the US, which hardly filled me with confidence. Meamwhile the newly assigned password didn't work, however simply hitting the enter key when prompted for the password did the trick. NetSol or NSA, they sure have strange ideas about security.