Japan will address the damage stemming from a cyber attack on a foreign exchange trading platform with a sense of urgency, and no new attacks have been detected, the nation’s finance minister said.

“Given how rapidly these incidents and circumstances evolve, we will continue to call on financial authorities to respond appropriately and swiftly as developments unfold,” Satsuki Katayama told reporters on Tuesday.

“There’s a sense of crisis shared globally” with regards to cybersecurity, she added, citing discussions with her Group of Seven counterparts in Bangkok last week.

Katayama spoke after dozens of businesses in Japan reported breaches to their systems and potential leaks of client data in recent weeks — at a time when concerns are mounting around the world about the use of artificial intelligence to take advantage of cybersecurity vulnerabilities.

In one of the latest incidents, IT services provider GMO Internet Group reported unauthorized access to its foreign-exchange trading platform, with some customers flagging transactions they hadn’t initiated.

Katayama said five FX firms had reported customers affected by the GMO incident, while noting that she had received no reports of new unauthorized transactions.

GMO sought government assistance on Saturday to help disrupt the source of the attacks. Chief Executive Officer Masatoshi Kumagai said in a blog post that the company had received a ransom demand for $50 million in cryptocurrency, which it refused to pay.

Prime Minister Sanae Takaichi instructed her cabinet on Monday to draw up emergency measures by the end of next week in response to a wave of cyberattacks targeting Japanese companies. Katayama said that the Financial Service Agency will consider the measure as soon as possible.