An attack of this type exploits the host's trust in executing remote
						content including binary files. The files are poisoned with a malicious
						payload (targeting the file systems accessible by the target software) by
						the attacker and may be passed through standard channels such as via email,
						and standard web content like PDF and multimedia files. The attacker
						exploits known vulnerabilities or handling routines in the target processes.
						Vulnerabilities of this type have been found in a wide variety of commercial
						applications from Microsoft Office to Adobe Acrobat and Apple Safari web
						browser. When the attacker knows the standard handling routines and can
						identify vulnerabilities and entry points they can be exploited by otherwise
						seemingly normal content. Once the attack is executed, the attacker's
						program can access relative directories such as C:\Program Files or other
						standard system directories to launch further attacks. In a worst case
						scenario, these programs are combined with other propagation logic and work
						as a virus.