Security testing is testing performed to check whether there is any information leakage in the application.
Security testing determines whether the application meets the specified security requirements.
SECURITY = BREAKING + BUILDING the stuff. First the hacker attacks the website then break it by applying different cheats and build the his own stuff.
There are various types of Attacks that are used by the attackers to attack the website or application.Attackers employ such attacks on websites and
find a way to get in and break the website stuff that is database,scanning port number, stealing database version,stealing cookies,making harm to code,violating with irrelevant stuff, inserting smuts.
Here is the List of ATTACKS that are used by the attackers.