facebook security/prevention?

[abraXus]

if you arent friends with him anymore, the spambot would have no way to automate messages based on past messages

and just so you know, the person probably never even read the messages you sent him after you were no longer friends, because those messages would have been put into his "other messages" folder and he would have never been notified that they were there

but spambots can only gain access to your account if you are foolish enough to fall for a phishing page... if by spambot you mean a "like page that asks for your permission to let their app post as you", their options for actions using your account are severely limited by facebook

so dont worry