Eichenwald also said the he received more than 40 similar.gifs from twitter users after they learned they may cause him to suffer seizures and he provided all the information about those individuals he could to the FBI for further investigation.
A Salisbury man was arrested Friday on cyberstalking charges for allegedly tweeting a strobe animation at a reporter known to suffer from epilepsy. The FBI confirms to Heat Street that an arrest has been made.
Mr Eichenwald claimed the tweet had sparked a number of copycat incidents.
Meanwhile, Newsweek identified the suspect as John Rivello, who was arrested early Friday at his residence in Salsbury, Maryland. In December previous year, Eichenwald received the animated image on Twitter along with the message, "You deserve a seizure for your posts".
It immediately triggered a seizure in Eichenwald, leaving him incapacitated for several days.
Called photic or pattern-sensitive seizures, these occur when people with epilepsy see a series of images or video that fall into a certain range of color, pattern and frequency.
The authorities also found an altered Wikipedia page in Rivello's iCloud account that showed a fake obituary for Eichenwald with a death date of December 16.
But they warned that photo-sensitivity and its relation to epilepsy is not very well understood. "Stop sending them", he pleaded. He said the suspect was scheduled to face the U.S. District Court in Baltimore on Friday afternoon.
Hagee said the FBI can not comment on ongoing investigations, but Eichenwald tweeted that the agency has details of the other cases of strobes and urged those people to "stop sending them".
The odd case has revealed how apparently innocent online tools can be deployed as weapons capable of physical injury.
Epilepsy is a brain disorder that causes recurring seizures which could also lead to violent muscle spasms and loss of consciousness.
"What [this person] did with his Twitter message was no different from someone sending a bomb in the mail or sending an envelope filled with Anthrax spores", said Eichenwald's attorney, Steven Lieberman. 'It triggers a physical effect'.