Stalking or stalkers are terms commonly used to refer to unwanted, obsessive attention or contact by individuals (and sometimes groups of people) towards others. Stalking behaviors are related to harassment and intimidation, whether implicit or explicit, and in some cases are both covertly and overtly aggressive and violent. It is critical to leverage protective intelligence to diagnose and provide actionable countermeasures to the stalker's thinking pattern, behavioral patterns, conduct, violence potential, and history of related circumstances that yields the current phase of the attack cycle the stalker is likely engaged.

• Rejected stalkers
• Resentful stalkers
• Intimacy seekers
• Curiosity seekers
• Incompetent suitors
• Predatory stalkers
• Activists stalkers
• False claims and delusional stalkers