Nearly four weeks after the cyberattack on dozens of French national museums during the Olympic Games, the Brain Cipher ransomware group claims responsibility for the incident and says 300 GB of data will be leaked later today. Le Grand Palais and dozens of other national museums and institutions overseen by Réunion des Musées Nationaux – Grand Palais (RMN-GP) were targeted by cybercriminals over August 3-4.

Source: The Register