Ernst & Young
Jul 2026 · Graded Attested · Professional and Business Services · Beyond the filings
Incident summary
Ernst & YoungJul 2026
Not yet quantified
AAttestedEY says it detected unusual activity on April 23 and determined that the attacker accessed the platform between March 28 and April 12, downloading multiple documents. The ShinyHunters extortion gang added Ernst & Young to its data leak site, claiming it conducted the attack and threatened to release the allegedly stolen data if the company does not contact the group by July 31, 2026. E&Y took more than 3 months to disclose the cyber incident.
Professional and Business Services
Ernst & Young data breach claimed by ShinyHunters extortion gang
Initial attack type not disclosed · Impact data theft confirmed + data extortion · Actor ShinyHunters
About this record
This incident is beyond the filings: attributed to a company statement, a regulator or court record, or a news report, and graded Attested or Inferred. Every figure links to the source it was read from; if we have read one wrong, tell us at info@hackerinahoodie.com. This index never sums figures across incidents. See the methodology.