All Breaches
January 24, 2024 Verified Technology / Enterprise Cloud & High Performance Computing

Hewlett Packard Enterprise (HPE) Data Breach

In January 2024, enterprise information technology giant Hewlett Packard Enterprise (HPE) disclosed in an SEC Form 8-K filing that the Russian state-sponsored threat group Midnight Blizzard (APT29 / Cozy Bear) had compromised its cloud-based corporate email environment.

Not disclosed
Reported Records
5
Data Types
Not rated
Severity
Oct 20, 2026
Last updated

The organization has not published how many were affected, so the incident cannot be placed on this scale.

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Exposed Data Types

5
  • Corporate email correspondence
  • Employee names
  • Email attachments
  • Cybersecurity incident analysis files
  • Internal corporate communications

About This Breach

The attackers maintained persistent access starting around May 2023, exfiltrating internal email threads, documents, and messages from mailboxes belonging to cybersecurity, product management, and executive personnel.

Verification and editorial method

LeakData compares the incident name, date, affected-record count, and exposed data types with accessible sources. Unverified fields are not presented as facts, and records are updated when new evidence becomes available.

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