ShinyHunters hackers expanded attacks on Oracle's PeopleSoft, Google says
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FILE PHOTO: Google logo is displayed at Google's headquarters in New York City, U.S., July 1, 2026. REUTERS/Aleksandra Michalska/File Photo
Sept 25 (Reuters) - Google's cybersecurity unit said on Friday that hacking group ShinyHunters has renewed "mass exploitation" of a security flaw in Oracle's PeopleSoft software, after skirting defenses put up following attacks in the summer.
Mandiant made the announcement in a threat intelligence report released days after ShinyHunters, which has claimed responsibility for several major data breaches, said it had stolen FBI personnel data.
The evolving nature of the attack is likely to ring alarm bells at organizations that rely on PeopleSoft for human resources and other critical functions, and heighten concerns about the vulnerability of even well-resourced institutions.
The unit of Alphabet's Google said ShinyHunters exploited a bug in Oracle's PeopleSoft enterprise software in attacks from May 27 through June 9 that mainly affected universities.
Mandiant said the hackers adapted to defensive guidance published after the May-June attacks and targeted organizations that implemented web application firewall rules but did not apply an update that Oracle issued to patch the vulnerability.
It said, without identifying victims, that the latest attack affected dozens of systems globally in sectors as varied as higher education, technology, healthcare, agriculture, transportation and government.
ShinyHunters has said it accessed FBI data using a vulnerability in PeopleSoft. Reuters has not been able to corroborate the claim. Oracle did not respond to requests for comment.
In a statement issued Wednesday, the Federal Bureau of Investigation said it was "aggressively investigating" the reported breach.
ShinyHunters exposed the names of personnel working in sensitive FBI units and acquired medical and psychiatric records, Reuters previously reported.
(Reporting by Natalia Bueno Rebolledo and Mrinmay Dey in Mexico City, and Raphael Satter in Washington; Editing by Christopher Cushing)
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