Stalking is a term commonly used to refer to unwanted and obsessive attention by an individual or group to another person. Stalking behaviors are related to harassment and intimidation and may include following the victim in person and/or monitoring them via the internet. The word stalking is used, with some differing meanings, in psychology and psychiatry and also in some legal jurisdictions as a term for a criminal offense.
According to a 2002 report by the National Center for Victims of Crime, "Virtually any unwanted contact between two people that directly or indirectly communicates a threat or places the victim in fear can be considered stalking."
does that answer your question? -_-