A mysterious hacker known as 'Misere' has breached the French government's Tchap messaging platform, compromising approximately 73,000 government accounts. The attacker claims to have exfiltrated sensitive messages and user data from the platform, which is used by French officials for secure communication. The breach is significant, given the platform's intended purpose of providing a secure messaging channel for government personnel. Technical details of the breach have not been disclosed, but the incident highlights the ongoing challenges faced by governments in protecting their digital assets from sophisticated threat actors1. The breach may have far-reaching implications for the security of sensitive government communications, and practitioners should be aware of the potential risks associated with similar platforms. So what matters most to security professionals is that this incident underscores the need for robust security measures to protect sensitive government data from determined threat actors.