Final answer:
Espionage and security negligence are considered insider threats in anti-terrorism efforts.
Step-by-step explanation:
From an Anti-Terrorism perspective, espionage and security negligence are considered insider threats. Espionage involves the act of gathering sensitive information without authorization, while security negligence refers to the failure to adequately protect classified information and assets. These insider threats can pose significant risks to national security, as they provide opportunities for terrorists or other malicious actors to exploit vulnerabilities within an organization or country.