> while random non-certified letters are, apparently They kind of are. Somebody would have to go and steal the physical letter and then read/scan it to make an

> while random non-certified letters are, apparently They kind of are. Somebody would have to go and steal the physical letter and then read/scan it to make any use of it. That excludes pretty much all attacks on the process --- at least such where criminals might hope to make a larger profit than most other criminal enterprises available to them. Whether that makes the letters a good idea is a different discussion...