BRUSSELS — The European Union’s cybersecurity rules are “ill-equipped” to deal with a new generation of AI hacking tools like Anthropic’s Mythos, lawmakers said Monday in a letter obtained by POLITICO.

Thirty members of the European Parliament from six political groups told Commission Executive Vice President Henna Virkkunen that the bloc needs to revise its laws and come up with a “European mitigation plan” to fight hacking risks associated with new AI models.

Anthropic announced last month that its model outperformed humans in finding and exploiting security vulnerabilities, alarming government and cybersecurity officials across the world. The new tech has also highlighted Europe’s struggle to gain access to cutting-edge AI to assess the risks.

“Europe is not at the table,” said Bart Groothuis, a Dutch liberal lawmaker and one of the letter’s signatories. “I think that we should shake the tree much, much harder.”

The Parliament’s internal market committee invited Anthropic to join a public hearing later this week, but the company said it was “unable to accept” the invitation to attend the hearing “at short notice,” according to a statement shared with POLITICO on Monday.

The lawmakers who signed the letter argued the European Union should reform its rules around the disclosure of cyber flaws and how they are fixed. They also urged the EU executive to prioritize the protection of “crown jewels,” like critical sector operators.

They pushed for the EU’s cyber agency ENISA to get access to Mythos and other models to scrutinize the risks.

Lawmakers are already eyeing an ongoing reform of the EU’s Cybersecurity Act to respond to the new threats, according to Groothuis, who previously served as a senior cybersecurity official in the Dutch government. The chief lawmaker on that bill, Czech Pirate Party member Markéta Gregorová, also signed Monday’s letter.

The Commission did not respond to a request for comment.