2
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Company intelligence
Hpe cybersecurity incidents and threat signals
hpe.com
This company page brings together public reporting currently associated with Hpe. It reflects signals published by Shadow Tier and should not be read as a complete incident history.
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July 1, 2026
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Based on all published signals currently linked to Hpe. Affected countries come from victim data; the company country above remains a separate profile fact. Counts describe this reporting set, not overall incident prevalence.
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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.
HPE Notifies Employees of Data Breach Following Russian Office 365 Hack
Hewlett Packard Enterprise (HPE) began notifying employees on January 29, 2025, about a data breach. Russian state-sponsored hackers (Midnight Blizzard, also known as Cozy Bear) gained unauthorized access to HPE's cloud-based Office 365 email environment in May 2023. The attackers exfiltrated data, including driver's licenses, credit card numbers, and Social Security numbers, from a small percentage of employee mailboxes, particularly those in cybersecurity, go-to-market, and business segments.
FAQ
Questions about Hpe cybersecurity reporting
What does the Hpe page include?
It combines a reviewed organization profile with all current published Shadow Tier signals explicitly linked to Hpe.
Does every mention of Hpe appear here?
No. A signal must contain a reliable company connection and meet the publication criteria; incidental or ambiguous mentions are excluded.
Why can the incident count change?
The page follows current published reporting. Counts change as new evidence is added, classifications are reviewed, or older signals leave the reporting window.