Active attack refers to a form of cyber attack where the attacker is actively involved in trying to disrupt or damage systems or networks. There are several synonyms that can be used to refer to such attacks, including aggressive, offensive, hostile, and invasive attacks. These attacks are often aimed at stealing sensitive information or gaining unauthorized access to systems, and are carried out by experienced hackers or cyber criminals. Other terms that may be used to describe active attacks include targeted attacks, advanced persistent threats, and zero-day attacks. It is important for organizations to be aware of these types of attacks and take steps to protect themselves against them.