Ransomware: prevent, absorb, recover
Ransomware remains one of the most destabilising threats an organisation can face: in a matter of hours, whole systems are encrypted, activity grinds to a halt, and stolen data becomes a means of pressure. Most attacks rely not on a technical feat but on ordinary weaknesses: a poorly protected remote access, a reused password, a missed patch, a booby-trapped email. That is good news: what is ordinary can be prevented. Prevention comes down to a few fundamentals kept up over time: tested, offline backups, stronger authentication, network segmentation, access monitoring and applied patches. Absorbing the blow means having prepared for the incident before it happens: a known response plan, identified contacts, framed decisions, starting with the reflex not to give in to haste or to a payment presented as the only way out. Recovering, finally, means restoring cleanly, understanding how the intrusion happened, and fixing it durably rather than plugging everything back in as it was. This guide brings together the analyses on ransomware and the data breaches that go with it, to help you move from a posture you endure to one you have prepared.
CybersecurityFrance's worst data breaches of 2026: the ranking (spoiler: you're in it)6,167 data breaches in 2025, a record, and 2026 is already doing better. From the Almerys brother-in-law nobody ever introduced you to, to the teenager who cracked open the ANTS vault by changing one digit in a URL, here is the ranking of France's worst breaches of the…
CybersecurityCISA, the GitHub leak: when the watchdog leaves the keys in the doorCISA, the US cyber agency, exposed its own AWS GovCloud credentials on public GitHub for 6 months. Anatomy of a leak in 7 failures.
CybersecurityThe ANTS hack: the 2007 flaw, the 2026 cheque, and the gap no figure can closeLecornu calls the ANTS breach the "heist of the century." It is a student homework-assignment heist. A 2007 flaw. With 200 million euros of announcement effect on top.
CybersecurityWhat nobody tells you when a hospital gets attacked.A French hospital takes two years to recover from a ransomware attack. 1,000 workstations, 200 applications, patient records lost forever. I lived through a ransomware attack in 2018. What makes me angry is not the attack.
SocietyThe European Commission hacked: when the regulator becomes proof of what it denounces340 GB of data exfiltrated, 30 European entities hit, DKIM keys in the wild. The European Commission that drafts NIS 2, the Cyber Resilience Act and the cybersolidarity regulation has just proven, at its own expense, that directives do not…
CybersecurityFICOBA: 1.2 million bank accounts exposed. So now what?FICOBA is the national register of bank and similar accounts. Created in 1971, it lists every account opened at French banking institutions: current accounts, savings accounts, securities accounts, rented safe-deposit boxes.
SocietyData breach at MédecinDirect: when digital health forgets what matters mostThe cyberattack that hit MédecinDirect, disclosed in early December, affects up to 323,000 patients. The number is already enormous. But that is not what should worry us the most.
SocietyFree transport, stolen data: the scammers travel first classIt is yet another Facebook scam, but one that works far too well. For several weeks now, hundreds of French people have been falling for a tempting promise: a free or heavily discounted pass for public transport. And the catch?
CybersecurityThey refuse to pay a ransom... and fund cybersecurityCybersecurity: your company is paralyzed by a cyberattack. Stolen data, locked systems, a ransom demanded. Panic, stress, media pressure. A
CybersecurityBlack Friday, Christmas, Sales: Cybercriminals Are Waiting for YouEvery year, at the same time, the queues move to virtual carts. Promotions explode, ads flash, "must-have" deals multiply... and in the shadows, cybercriminals are rubbing their hands.
CybersecurityCybersecurity: small businesses are not ready. And it will cost them.Talk to five owners of small businesses and you get the picture: cybersecurity is still a vague, distant, almost abstract idea. As long as no ransomware freezes the screen of Chantal in accounting, everyone carries on as before.
CybersecurityInfostealers: the silent threat you feed without knowing itThere are cyberattacks you never see coming. No flashy virus, no ransom messages, no brutal crash. Just a simple infostealer
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