Oracle security incident history
Hacking, data breaches and other security incidents involving Oracle, with related coverage.
Oracle hack leads to data breach and extortion demands
A data breach occurred as a result of the Oracle hack. Oracle faced 11 related class actions in Texas. Extortion demands related to the hack continued afterwards.
Related reports: 2 · last report →Oracle targeted in two cyber-attacks, possible data breaches
Oracle was reportedly the target of two separate cyber-attacks. The possibility of data breaches from each attack was raised.
Read on JD Supra ↗Oracle Health hack leaks patient data of about 20 million people
20mImpact: Patient data of about 20 million people
Oracle Health was hacked in 2025, leaking patient data. The US Federal Bureau of Investigation investigated the attack, and leaks affecting healthcare providers were later disclosed. The scale confirmed in October 2026 is about 20 million people.
Related reports: 12 · last report →Oracle legacy server hack leaks customer credentials
Impact: Credentials for 6 million users, according to the attacker
Allegations emerged that Oracle Cloud customer credentials had been stolen, and several customers confirmed that samples provided by the attacker matched their own data. The attacker claimed to have stolen data on 6 million users. Oracle later acknowledged a breach of legacy servers but denied that its flagship cloud platform, OCI, had been compromised.
Related reports: 23 · last report →