July 9th, 2012 
Linux Hosting Please provide links
*Note*
I do not own the server myself.
Chosen Answer:
Hello,
You ultimately need form validation at the very least. Any form or location where users can enter data should be validated. A captcha code to verify that they are human is a great example.
http://www.captcha.net/
Good Luck!
Sean Colicchio
Server Engineer
Host My Site
http://www.hostmysite.com/?utm_source=bb
by: Sean C
on: 23rd April 09
Posted in 
Tags:
Using a good firewall.. (the good old iptables firewall infact is really good ) .
May be try to have a DMZ (De militarized zone ) set up.
Use SeLinux .
Have an IPS/IDS (Intrusion detection/prevention system )
Keep minimalistic ports open.
Hello,
You ultimately need form validation at the very least. Any form or location where users can enter data should be validated. A captcha code to verify that they are human is a great example.
http://www.captcha.net/
Good Luck!
Sean Colicchio
Server Engineer
Host My Site
http://www.hostmysite.com/?utm_source=bb