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Chinese hacker “Crazyhunter” behind ransomware attack on MacKay Hospital, others: CIB

Posted on April 5, 2025April 5, 2025 by Dissent

Huang Li-yun and Matthew Mazzetta report that the hacker known as “Crazyhunter” on Breach Forums has been identified and prosecutors are seeking an arrest warrant for him:

The Criminal Investigation Bureau (CIB) on Wednesday said it had identified the suspect behind the hacking and attempted extortion of MacKay Memorial Hospital as a 20-year-old Chinese man, but gave little indication as to whether it expected China’s government to pursue the case.

Taipei’s MacKay Memorial Hospital was hit by a ransomware attack on Feb. 6 by a hacker using the alias “Crazyhunter,” which paralyzed the hospital’s computer systems and demanded payment in return, Lin Chien-lung (林建隆), head of the CIB’s High-Tech Crime Center said at a news conference.

[…]

By analyzing IP data, hacking techniques and the ransomware used, CIB investigators identified “Crazyhunter” as a 20-year-old employee of a cyber security company in Zhejiang Province, China, surnamed Lo (羅), while also collecting other digital evidence related to his illicit financial flows.

[…]

As Lo’s alleged actions violated several laws, including extortion and offenses against computer security under the Criminal Code, and violations of the Personal Data Protection Act, he was referred to Taipei prosecutors to have a warrant put out for his arrest, the CIB said.

Read more at Focus Taiwan.

Whether China will cooperate with any arrest request remains to be seen.


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