An Action News Investigation first brought you the story 2 years ago in an exclusive report.
Hatziefstathiou runs a website called YC News, short for Young Constituents.
Prosecutors say he altered an email to include racist language then published the email on his website.
SEE ALSO: Action News Investigation: Was an alleged racist email by Delaware Co. official fabricated for headlines
On Thursday, he was found guilty of identity theft, forgery and other related charges.
Sentencing is scheduled for next month.
In 2015, Hatziefstathiou was accused of terrorizing his Broomall neighbor. Courts records allege he sent over a dozen prostitutes from Backpage.com to their home and then reported the suspicious activity to authorities while he watched next door.
According to court records, Hatziefstathiou was accused of calling one of the escorts after police responded, and, using racial slurs, said he liked to watch African Americans "get locked up."
In the harassment case, Hatziefstathiou pleaded guilty to three counts of falsely incriminating another and received probation in Delaware County.