A Vienna-based data protection campaign group filed complaints in eight European countries on Monday against Elon Musk’s X for “unlawfully” feeding users’ personal data into its artificial intelligence technology without their consent.

The complaints from the European Digital Rights Centre – also known as Noyb (“None of Your Business”) – come after the Irish Data Protection Commission (DPC) took legal action against X earlier this month over the company’s data collection practices to train its AI.

X recently began “irrevocably feeding” the personal data of more than 60 million European users into its AI technology Grok “without ever informing them or asking for their consent,” Noyb said.

Noyb accused X of “never proactively informing” its users that their data was being used to train artificial intelligence. Many people apparently “learned about the new default setting through a viral post on July 26.”

Last week, the DPC, acting on behalf of the European Union, said that X had agreed to suspend the widely criticized processing of personal user data for its AI technology.

But Noyb founder Max Schrems said in a statement that the DPC had failed to question “the legality” of the actual data processing and that it appeared to have acted “at the edges and not at the core of the problem”.

Noyb also warned that it remains unclear what will happen to the EU data that has already been recorded.

Noyb called for a “comprehensive investigation” and filed complaints in Austria, Belgium, France, Greece, Ireland, Italy, the Netherlands and Spain.

The group has requested an “expedited procedure” against X, allowing the data protection authorities of the eight European countries to intervene.

“We want to ensure that Twitter (now X) fully complies with EU law, which requires – as a bare minimum – to ask users for consent,” Schrems said, referring to the bloc’s landmark General Data Protection Regulation (GDPR).

The aim of the GDPR is to give citizens easier control over how companies use their personal data.

The group recently took similar legal action against social media giant Meta, forcing it to abandon its AI plans.

Noyb has filed several lawsuits against technology giants, often resulting in action by regulators.

The group began its work in 2018 with the introduction of the GDPR.