Immutable Backups: Ransomware's Kryptonite
Blocks & Files, Tuesday, October 28th, 2025
Ransomware remains among the most destructive security threats organizations face. A 2025 Enterprise Strategy Group (ESG) survey of 200 IT decision makers across North America and Western Europe found two-thirds of organizations experienced ransomware attacks in the past two years, many suffering multiple attacks.
When ransomware hits, it hits hard. Only nine percent of victims recovered within a day, while many took weeks. And recovery doesn't mean getting all of your data back. The survey found 43% of companies recovering less than three quarters of their data.
Not only are attacks mounting in volume and severity with expanding target variety, but perpetrators' tactics are evolving alarmingly. Threat actors now make backup data their primary objective, knowing victims are less likely to pay ransoms if they can restore from clean backup copies. Without restoration capability, organizations face existential threats and may have no choice but to pay.