New cyberattack case against an Ile-de-France institution. Victim of a cyberattack at the end of August which paralyzed part of its computer system, the Corbeil-Essonnes hospital center announced on Tuesday that it was preparing “to resume activity close to normal” by the end of October. , after several weeks of paralysis. The establishment was hit on August 21 by a cyberattack with a ransom demand of $10 million, later reduced to one or two million dollars, according to the sources. The hackers had given the hospital an ultimatum of September 23 to pay the ransom. After that time, they had released a series of data on the “Dark Web”.

This time, it was the town hall of Chaville, in the Hauts-de-Seine, which was attacked by a group of Russian-speaking hackers called Cuba Ransomware. According to Le Parisien, the hackers claimed responsibility for the attack on the blog, online on the Dark Net. At the end of last week, these cybercriminals deployed ransomware, encrypting and paralyzing computer systems in order to monetize a return to normal against a large sum of money, the amount of which was not indicated, according to the town hall.

The attack specifically targeted “a server used by networks that hosts shared files,” according to the daily. The National Information Systems Security Agency, supported by a service provider specializing in cybersecurity, is committed to “cleaning up computers and files in order to recover as many as possible”, explains the town hall. On their blog, the hackers made public documents supposedly stolen from the city of Chaville, but the latter assures that “the data published does not belong to us and there has, a priori, been no theft of our data “. City services are deprived of access to their mailboxes, the municipality has filed a complaint.

The Cuba Ransomware group, close, according to Le Parisien, to the Russian-speaking cybermafia, spares Russian institutions and computer systems in Cyrillic. “They are used to hunting the biggest targets but they are opportunistic, and the town halls have computer systems that have few resources”, explains François Deruty, director of operations of the cybersecurity company Sekoia, to the daily.