virtual mobbing
pp. Using online media and technologies to attack or gang up on a person.
virtual mob n.

Example Citations:
He uses his book to describe how one can die by Twitter. He calls his experience a virtual mobbing.
—Tim Harper, “Tom Flanagan clawing back from a virtual mobbing,” The Toronto Star, April 27, 2014

The background against which the inquiry took place was an increasing number of situations in which people were committing criminal offences using social networks — particularly Facebook and Twitter. The committee examined instances of cyber bullying, revenge porn, trolling and virtual mobbing to try and determine whether or not they were criminal offences and if they were, whether new legislation was required to deal with them.
—Katie Collins, “Crime on social media covered by existing UK law, Lords conclude,” Wired UK, July 29, 2014

Earliest Citation:

—John W. Daly, “Germany blacklists cybermobbing site: Virtual mobbing turns to real life bullying,” TechEYE.net, March 25, 2011

Notes:
The synonym cybermobbing (or cyber-mobbing) dates to at least 2009 and is likely a few years older than that.

Related Words: