A Canadian who carried out a sustained campaign of ‘swatting’ has plead guilty to 23 offences of extortion, public mischief, and criminal harassment.

As reported by Canadian publication Tri-City News, the 17-year-old male, who cannot be named because of his age, mostly terrorised young female gamers and their parents.

When the women denied his friendship requests, he shut down their internet access, posted their personal information online, and repeatedly called them late at night.

He would also contact the police in their hometown, claiming he had hostages, napalm bombs, or had killed someone in their house.

Another tactic was to post a target's parents’ dates of birth, social insurance and credit card numbers on the web, and have pizza which they had not ordered delivered to their home.

One of his targets withdrew from university following his relentless pursuit and harassment of her and her family – a campaign of terror that included two swatting events at her home and one at her parent’s home.

In December, he posted an eight-hour live stream of himself on YouTube that showed him tormenting his victims, and the police were duly notified.

If you wish to be thoroughly angry and/or depressed, you can read more about his actions on the Tri-City News site.