What term describes a criminal organization that repeatedly engages in illegal acts and poses security threats?

The term that best fits the description of a criminal organization that repeatedly engages in illegal acts and poses security threats is "security threat group." This designation is commonly used in the context of law enforcement and corrections to categorize organized groups that pose significant risks to public safety and institutional security. Security threat groups can include gangs, organized crime syndicates, and other collectives that contribute to criminal activities on a consistent basis, exemplifying a pattern of behavior that threatens societal norms and law enforcement efforts.

While other terms like criminal enterprise refer to groups involved in ongoing illegal activities for profit, a security threat group specifically emphasizes the potential risk and danger these organizations present to security. Thus, the focus is not only on the illegal acts committed but also on their implications for safety and order within a community or institution.