Hacked, leaked, and held for ransom: the worst breaches of 2026 so far

The article rounds up the most damaging security incidents and data breaches of 2026 to date. Major examples include a massive DOGE data breach, attacks on critical energy and water systems, and a hack of an FBI surveillance system.

The incidents show how cyberattacks are increasingly hitting both sensitive government systems and critical infrastructure. The breadth of targets suggests security teams will face growing pressure to improve resilience, incident response, and oversight of high-risk data systems.

From a massive DOGE data breach and the hacking of critical energy and water systems to the hack of an FBI surveillance system, here are the most damaging security incidents and data breaches of 2026.