digilante 

digital vigilante; fact-checkers, hackers or tech-savvy activists who seek and administer justice undelivered by legal authority

Digilantes have made it more difficult for political leaders to slack.

digilante by tagadagat2 March 23, 2013

digilante 

Someone who uses the internet to fight injustice.

Mild-mannered (ahem) Simon Lazenby is in virtuality a crime-fighting digilante!

digilante by misterwolf December 24, 2009

digilante 

Internet-based crime-fighter, above or not neccessarily in conjunction with the law.

419eater.com is a good example of a "digilante"

digilante by servotron November 7, 2007

Digilante 

A casual or passionate individual or group who use digital means to wreak real havoc

It was a drunken mistake, but alas the digilantes meant sure that for this graduate, it was never forgotten.

Digilante by hector85 October 5, 2015

digilante justice 

Mob justice meted out over the internet.

Digilante justice was swift after I posted that comment about #unpopularTrump, when a crowd of white supremacists doxed me.

digilante justice by JimBen August 6, 2019

Kenosha vigilante 

Nickname for Kyle Rittenhouse who killed two people in Kenosha, WI during a protest against police brutality

The Kenosha vigilante used an AR15 to gun down two unarmed protesters but got away with it by claiming it was self defense.

Kenosha vigilante by Just_sayin' December 12, 2021

Vigilante 

An individual(who without legal authority) takes the law into their own hands in order to suppress criminal activity with violent tactics

This vigilante act is capitalizing on ceasing crimes faster that the police.

Vigilante by The real Jester August 5, 2016