X, Elon Musk's social media platform formerly known as Twitter, is officially contesting a €120 million fine imposed by the European Union for violations of the Digital Services Act (DSA). The EU Commission, in December, determined that X breached three DSA regulations, specifically citing deceptive practices with its blue checkmark verification, non-compliance with advertising transparency rules, and failure to provide researchers with platform data access. X argues that the EU's investigation was insufficient and superficial, that the DSA was misinterpreted, and that its defense rights were violated, suggesting prosecutorial bias. The platform views this legal challenge, filed on February 16, 2026, with three related cases before the European Court of Justice, as a crucial precedent for future DSA enforcement and the protection of fundamental rights.