A security breach has been reported in Tchap, the encrypted messaging platform used by the French government, resulting from an account hijacking attack. The digital affairs directorate, DINUM, issued a warning regarding the incident, which involved hackers exploiting a compromised user account to gain unauthorized access to the system. This type of attack highlights the vulnerability of even secure messaging services to social engineering tactics and account takeover threats. The breach of Tchap, which is designed to provide end-to-end encryption for government communications, raises concerns about the potential for sensitive information to be compromised1. As a result, government agencies and organizations using similar platforms must reevaluate their security protocols to prevent such incidents. The incident underscores the importance of robust account security measures and ongoing monitoring to detect and respond to potential threats, so what matters most to practitioners is the need to stay vigilant and adapt their security strategies to mitigate emerging risks.