Graham Clark told Circuit Court Judge Christopher Nash in Tampa
that he was not guilty of the 30 felony counts of fraud
prosecutors have leveled against him, according to court
Clark is scheduled to appear in court again on Wednesday for a
hearing on a request to change his $750,000 bond and conditions
of release. Clark's attorney, David Weisbrod, did not
immediately return a call seeking comment.
A 19-year-old British man and a 22-year-old man in Orlando,
Florida, have also been charged under U.S. federal law with
aiding the attack, the Justice Department said.
Clark netted at least $100,000 from the scheme by using the
celebrity accounts to solicit investments from unsuspecting
Twitter users, state officials said.
Mason Sheppard, a 19-year-old from Bognor Regis, Britain, who
used the alias Chaewon, was charged with wire fraud and money
laundering while Orlando-based Nima Fazeli, 22, nicknamed Rolex,
was accused of aiding and abetting the crimes, according to a
Justice Department statement.
In the hack, fraudulent tweets soliciting investments in the
digital currency bitcoin were posted in mid-July by 45 verified
Twitter accounts, including those belonging to Biden, former
President Barack Obama and billionaire Bill Gates. Twitter said
the hackers also likely read some direct messages, including
those of a Dutch elected official.
More than $100,000 was obtained, bitcoin's public ledger showed.
Twitter has previously said its employees were duped into
sharing account credentials.
Authorities provided new details Friday in an affidavit alleging
that Clark "used social engineering to convince a Twitter
employee that he was a co-worker in the IT department and had
the employee provide credentials to access the customer service
(Reporting by Brad Brooks in Lubbock, Texas; Editing by Aurora
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