Helmed by erratic new owner Elon Musk, Twitter is no longer fulfilling key obligations required for it to claim Ireland as its so-called main establishment under the European Union’s General Data Protection Regulation (GDPR), a source familiar with the matter has told TechCrunch. Our source, who is well placed, requested and was granted anonymity owing to the sensitivity of the issue — which could have major ramifications for Twitter and for Musk. Like many major tech firms with customers across the European Union, Twitter currently avails itself of a mechanism in the GDPR known as the one-stop shop (OSS). This is beneficial because it allows the company to streamline regulatory administration by being able to engage exclusively with a lead data supervisor in the EU Member State where it is “main established” (in Twitter’s case, Ireland), rather than having to accept inbound from data protection authorities across the bloc.