An Advanced Persistent Threat (APT) is a sophisticated and prolonged cyberattack carried out by organized groups, often state-sponsored, targeting specific organizations or sectors. These attackers use advanced techniques to gain unauthorized access, remain undetected for extended periods, and systematically steal sensitive data or disrupt operations. Unlike typical cybercriminals, APT groups are highly skilled, well-funded, and focused on long-term objectives, such as espionage or sabotage. Their attacks are carefully planned, persistent, and tailored to their targets, making them a significant threat to governments, corporations, and critical infrastructure.