Digital Services Act (DSA).
The DSA came into force in November last year and requires very large online platforms and search engines to do more to tackle illegal content and risks to public security.
The probe will focus on countering the dissemination of illegal content in the EU, and the effectiveness of measures taken to combat information manipulation, including the «community notes» system, the Commission said.
Earlier this year X launched its «Community Notes» feature, which allows users to comment on posts to flag false or misleading content, in effect crowd-sourcing fact checking to users rather than a dedicated team of fact checkers.
The probe will also examine different aspects of the company's business including the data access which X provides to researchers.
Social media researchers have canceled, suspended or changed more than 100 studies about X, formerly Twitter, as a result of actions taken by its owner Elon Musk that limit access to the platform, Reuters reported last month.
«The step that we are taking today does not find X guilty of an infringement, or conclude that X has actually infringed the DSA but merely states that we have significant ground to investigate these areas in detail,» a senior EU official said.
X remains committed to complying with the DSA and is cooperating with the regulatory process, it said in a statement on Monday.
«It is important that this process remains free of political influence and follows