The attacker uses an alternate form of a key word or command that results
						in the same action as the primary form but which may not be caught by
						filters. For example, many keywords are processed in a case insensitive
						manner. If the site's web filtering algorithm does not convert all tags into
						a consistent case before the comparison with forbidden keywords it is
						possible to bypass filters by using an alternate case structure. For
						example, the "script" tag using the alternate forms of "Script" or "ScRiPt"
						may bypass filters where "script" is the only form tested. Other variants
						using different syntax representations are also possible. The attack can
						result in the execution of otherwise prohibited functionality.