Quote: Originally Posted by Layback Bear
...I haven't seen any such things reported on snail mail.
I have. Most mail boxes are insecure. Unless people take their mail to the post office, checks placed in a mail box at home for pickup can easily be intercepted and cashed, often after being kited (and even the post office isn't 100% safe). Even worse, they can be used to forge additional checks. Some people mail their bill payments at their places of employment but, again, they can be intercepted by someone.
As long as online bill paying is done via Secure Sockets Layer (https) on a secure internet connection and one' computer has an adequate AV and properly setup firewall, the only way to be safer is to pay the bill in person with cash. The vast majority of identity theft occurs from hackers getting into company credit card records, skimmers on pay points, etc. rather than from intercepted bill paying transactions.