Hewlett Packard Enterprise (HPE) Data Breach
Hewlett Packard Enterprise (HPE) began notifying employees on February 7, 2025, about a data breach that occurred in May 2023. The breach, attributed to the Russian state-sponsored hacking group Midnight Blizzard (also known as Cozy Bear or APT29), involved unauthorized access to a small percentage of HPE's Office 365 email environment. Compromised data included employees' Social Security numbers, driver's license details, and credit card numbers, as well as some files from SharePoint.
Signal context
First seen: Feb 7, 2025
Last updated: Jul 1, 2026
Status: Public signal
Key points
- Employee notifications began on February 7, 2025.
- Breach occurred in May 2023.
- Attributed to Russian state-sponsored hacking group Midnight Blizzard (Cozy Bear/APT29).
Signal analysis
BetaIt helps compare this signal with other published signals without treating the labels as final determinations.
Likely country: Location not provided
Watch internet-facing systems, credential abuse and exploit activity.
- Source type: outside the affected organization
Impact area: Confidentiality
Likely asset: User or customer data
- 1 signal in the same sector
- 88 signals with the same likely impact area
- 1 signal linked to this organization/domain
External sources
HPE notifies employees of data breach after Russian Office 365 hack - Bleeping Computerhttps://www.bleepingcomputer.com/news/security/hpe-notifies-employees-of-data-breach-after-russian-office-365-hack/Public source from bleepingcomputer.com.
Spring-based HPE notifying data breach victims after 2023 cyberattack - Houston Chroniclehttps://www.houstonchronicle.com/business/article/hpe-notifying-employees-data-breach-russian-19830500.phpPublic source from houstonchronicle.com.
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