The core defense machanisms

The fundametal security problem with  web applications ----- that all user input is

not trust----gives rise to numbers of security machanisms that application uses to

defend themselve against attact. All machanisms employ the concept similary.

The defense machanisms employed by web application compromise the following

core elements

1 handling user access to the application`s data and functionality prevent user gain

unauthorsized access.

2 handling user input to the application`s to functions to prevent malformed input

from causing undesirable behaviors.

3 handling attackers to ensure that the application behaves appropriately

4 managing application itself by enabling the admintrators to monitor its activity and

configure the functionality.