In Japan, a man convicted of abusing generative AI to create a virus
In Japan, a man convicted of abusing generative AI to create a virus


Recently, a 25-year-old Japanese man was sentenced to three years in prison, suspended for four years, by the Tokyo District Court. This decision marks a turning point, as it is the first case in Japan where the misuse of a Generative AI results in a criminal conviction. This incident highlights the dangers linked to such innovative technology.
The specific case: Malware created by AI
According to information relayed by the Yomiuri Shimbunthe accused used a computer and a smartphone to develop a type virus ransomware. This malware was designed using program blueprints obtained via generative AI. In addition, the individual impersonated other people in order to defraud mobile communication cards.
An accessible but dangerous technology
The court highlighted a worrying reality: even without advanced computer skills, it is now possible to use generative AI to create computer viruses. The accused admitted that he had used a unofficial version of ChatGPT to generate the source code of software capable of encrypting files. These files then became unusable until a ransom in the form of Bitcoin be paid.
- Unlimited access to malicious information
- Ease of creating harmful programs
- Anonymity and online identity theft
Ways to circumvent restrictions
Yoshikawa Takashi, Senior Malware Analyst at Mitsui Bussan Secure Directionshighlighted the dangers that emanate from the malicious use of AI. Although generative AI platforms are designed to restrict access to illegal information, there are online ways to circumvent these restrictions. The accused admitted to researching and applying methods to remove these barriers.
A call to action
Yoshikawa’s words resonate as a call for vigilance: “When generative AI is exploited maliciously, even those without specific computer skills can access information that could be used for criminal purposes. . » His warning highlights the urgency of putting in place proactive measures to prevent abuses linked to generative AI.
- Strengthen AI regulations
- Educate the public about the risks of AI
- Encourage collaboration between businesses and governments
A double-edged technology
This case serves as a reminder that generative AI, despite its undeniable advantages, can also be used for malicious purposes. As this technology continues to evolve, it is essential to take a proactive approach to minimize risks. Collective responsibility is essential to ensure that innovation is not used against the well-being of society.






