Hacking is the curiosity of your mind to understand the system, when you tempted into black path, then you became cracker, many tools has been deployed into internet by people to hack something, many people learn from it. Strong top security clearance required. Many firewall from commercial firewall into free firewall has been built. Hacking never stop only by providing top tools to defend and build strong firewall security, there are many hole at port inside of computer system. From worm to trojan, but the basic thing to prevent cracker hacking your website server is the follow:

1. Provide strong password, you should provide longer password minimal 7, and it should be constructed from alphabetical and numerical also please include symbol character like !?@*, etc. And please avoid default password, default password make your system weak. Avoid password of your date birth, avoid password only name.
2. Leveling password login into server, many tools can be crack password in milliseconds, providing protocol and password login leveling protocol can be delay the hacking. It could three layer password, remember the long delay you can make cracker into hacking, it will provide fast counter attack of the hacking.
3. User validation, sql injection, wrong type user input could be make your system going down. The system needs strong user validation to prevent any input processing by system make the system going down.

We never knew, when the cracker will infiltrate into system, what we need is 24/7 system to guard and make counter attack and alert to us when cracker trying to hack our system.