The term Advanced Persistent Threat (APT) refers to a potential attacker that has the capability and the intent to carry out advanced attacks against specific high profile targets in order to compromise their systems and maintain permanent control over them in a stealthy manner. APT attacks often rely on new malware, which is not yet known to and recognized by traditional anti-virus products. APTs require significant resources and expertise and are often politically motivated (espionage). They are run, overseen or bankrolled by a controlling authority or client, rather than being the work of an individual malicious actor.