Ahmad is one of seven hackers indicted by the DOJ for 2011-2013 DDoS attacks against US Banks conducted by Iran. As a result of being accused of having a part in the DDoS attacks, he is on the FBI's most wanted cybercriminal list.
According to a department of justice press release Fathi was responsible for coordinating ITSEC’s portion of the DDoS campaign against the US financial sector.
https://www.justice.gov/opa/pr/seven-iranians-working-islamic-revolution...
https://www.fbi.gov/wanted/cyber/cyber-crimes