When supervising offenders on probation or parole, it is important to identify stalking behaviors in previous and/or current conduct, whether or not the conviction is for stalking or harassment. This guide lists possible stalking behaviors and tactics, which can be divided into four categories: Surveillance, Life invasion, Intimidation, and Interference through sabotage or attack (SLII). These categories overlap and build on each other, and many stalkers use creative tactics beyond the examples in this guide.