Is there are reason why the signed message didn't include a date?
Are they supposed to include a date?
Yes or I could just copy+paste that next year and claim his account.. You should not sign such generic messages because now anybody can use that..
I guess anyone can, but if they are asked to move btc from that address they cant so the signature can bu used but also debunked at the same time if its being used by a fraud. right?