Sharon Rina Lopatka (née Denburg; September 20, 1961 – October 16, 1996) was an Internet entrepreneur in Hampstead, Maryland, United States who was killed in a case of apparent consensual homicide. Lopatka was tortured and strangled to death on October 16, 1996, by Robert "Bobby" Frederick Glass, a computer analyst from North Carolina. The apparent purpose was mutual sexual gratification. . The case was reportedly the first where a police department arrested a murder suspect with evidence gathered primarily from email messages.
https://en.wikipedia.org/wiki/Killing_of_Sharon_Lopatka