What is the reason why FBI arrests a hacker who stopped the wild worldwide malware Wanna Cry and became a hero?

Malware that caused damage in the world such as bringing down the production line of British hospital, Spain communication company, Japanese automaker, system "Wanna CryIt was revealed that a British security researcher who stopped spreading and became a hero was arrested while staying in the United States.

Researcher Who Stopped WannaCry Ransomware Detained in US After Def Con - Motherboard
https://motherboard.vice.com/amp/en_us/article/ywp8k5/researcher-who-stopped-wannacry-ransomware-dethained-in-us-after-def-con

Slayer of WCry worm charged with creating unrelated banking malware | Ars Technica
https://arstechnica.com/tech-policy/2017/08/researcher-who-stopped-wcry-worm-detained-under-mysterious-circumstances/

Young researcher Marcus Hatinsu resident in Britain who works for a security counterpart company found a "kill switch" to stop Wanna Cry and contributed to the calming of Wanna CryA coincidence hero who saved the world"I became a hero in the first place.


The major IT news media in the US reports that the hero was detained by the Henderson detention center in Nevada, USA on July 23, 2017. Mr. Hutchins held the event of hacking held in Las VegasDEF CONWhenBlack Hat BriefingsI was visiting the US to participate in.

The allegation against Mr. Hutchins said that he manufactured a malware "Kronos" that steals net bank account information. When announced in 2014, Kronos seems to have been trading at 3000 dollars (about 330,000 yen) at the Russian dark site.

Kronos has a function to avoid the virus detection and protection function of the web browser, and it monitors infected PC and extracts account information of the bank bank, credit card information, etc.

Kronos Zeus Father - YouTube


Mr. Hutchins who was indicted about 24 hours after being detained in the detention center, but Mr. Hutchins' friend of mine visited the detention center on July 27, 2017, "The Mr. Hutchins are not here anymore" He said that he was told. "I do not know why Mr. Hutchins was arrested, I am worried about his body," this anonymous friend is talking about. Motherboard received a reply from the Massachusetts State spokesperson via e-mail that "This is an arrest by FBI and not managed by the Federal Security Service."

On the arrest and detention of Mr. Hutchins, the British National Criminal Investigation Agency responded, "I understand that the British citizens were arrested, but this is a matter of American investigative agencies," and responded to the British National Cyber ​​Security Center "It is grasping about the situation, but it is a law enforcement issue and it is not appropriate to comment", he said to Motherboard.