Thread: how can you tell whether the sites been hacked?

how can you tell whether the sites been hacked?

what type of hack? o_o
if site gets Denial of service attack (DDoS) you'll experience or get reports of website downtime
else hacker would change the homepage and say something like "Hacked by <name>"

not sure but i found a watch-out directory in one of my sites /public_html/
its contains a facebook php code and an images saying Find Out who else has been logging into your account..

anybody knew this?