Mikeyy is the name of a computer worm

Computer worm

A computer worm is a self-replicating malware computer program, which uses a computer network to send copies of itself to other nodes and it may do so without any user intervention. This is due to security shortcomings on the target computer. Unlike a computer virus, it does not need to attach...

 that spread approximately 10,000 automated messages ( or "tweets") across social networking and mini-blog website Twitter

Twitter

Twitter is an online social networking and microblogging service that enables its users to send and read text-based posts of up to 140 characters, informally known as "tweets".Twitter was created in March 2006 by Jack Dorsey and launched that July...

.com in four discrete attacks "between 2 AM Saturday April 11, 2009 Pacific time and early Monday (April 14, 2009) morning" before it was "identified and deleted". The tweets promoted a website called StalkDaily.

The worm was written by 17 year old Michael Mooney

Michael Mooney

Michael Mooney may refer to:* Michael Mooney , Irish soccer player* Michael Mooney, former member of the English rock band Spiritualized* Mike Mooney , National Football League player...

who operates a website to point out vulnerabilities

Vulnerability (computing)

In computer security, a vulnerability is a weakness which allows an attacker to reduce a system's information assurance.Vulnerability is the intersection of three elements: a system susceptibility or flaw, attacker access to the flaw, and attacker capability to exploit the flaw...

in Twitter while advertising his website.