Data on users who subscribe to social networks for free are an important source of indirect revenue for websites. As a result, the platforms must pay taxes on the income generated by client profiling. Based on this premise, the Milan Public Prosecutor's office has completed an inquiry into alleged tax evasion begun more than two years ago against the Meta group, the US digital giant that owns Facebook, Instagram, WhatsApp, and Messenger. The magistrates have accused Meta Platforms Ireland, a Dublin-based company that receives the revenues generated by social networks in Italy and other countries worldwide, with the exception of the United States, of failing to declare over 3.9 billion in taxable income and evading the payment of 887.6 million euros in VAT between 2015 and 2021. As has become apparent in recent months, the Milan Public Prosecutor's Office's investigation has a significant innovative element, as the data collected from the profiling of internet platform users is now considered relevant for tax purposes for the first time. The recently concluded case serves as a crucial test that may soon impact other web companies.