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Disclosed this week44On record26,355

44 disclosed this week · 26,355 on record

Oracle

Disclosed Mar 21, 2025Unverified

Hacker steals Oracle Cloud SSO login data; Oracle blames obsolete servers

A threat actor claimed to have stolen 6 million records from Oracle Cloud federated SSO login servers affecting 140,621 tenant domains; Oracle denied a cloud breach but later told customers a hacker accessed two obsolete servers and published user names, and customers confirmed samples were valid.

What is known

People affectedNot stated in the sources we have
DisclosedMar 21, 2025
AttackHacking
Data exposedEmailsCredentials and tokensPasswords
SectorTech · US
StatusUnverified: not yet confirmed by an official notice, a filing or the organization

Sources

Newstechcrunch.com
Oracle under fire for its handling of separate security incidents
Newsbleepingcomputer.com
Oracle customers confirm data stolen in alleged cloud breach is valid
Newsbleepingcomputer.com
Oracle denies breach after hacker claims theft of 6 million data records
Newsbleepingcomputer.com
Oracle says obsolete servers hacked, denies cloud breach

Notices filed

TotalMar 21, 2025
ResearchCount not stated

Other breaches at Oracle

Clop exploits Oracle E-Business Suite zero-day to steal data from dozensSupply chain exposed employment records, financial details, internal documents, Social Security numbers and names.Supply chainTechUSOct 2, 2025Hacker steals patient data from legacy Oracle Health (Cerner) serversHacking exposed health records and names.HackingHealthcareUSUnverifiedMar 28, 2025
History of this record
Added2026-09-25
First recordedby seedSource

First seen 2026-09-25 (Research). Record counts are as reported. Not legal advice.

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