My favorite BBS hack was that on some standard RA configs, unless explicitly turned off by the sysop, you could save received messages to disk even if you were

My favorite BBS hack was that on some standard RA configs, unless explicitly turned off by the sysop, you could save received messages to disk even if you were just a normal user. This meant that you could send a message to yourself, i.e. 'del . /q /s' (or whatever zapped your dos disk, I can't really remember.), and then save it to 'c:\autoexec.bat' ... Other fun things where nailbombs, small .zip files that would expand to multiple gigs. When you uploaded those to early RA systems the virus scanner would attempt to unpack them and quickly fill up the entire disk, causing the BBS to grind to a halt. Kids these days have no idea what they missed :3