Iron Mountain

Disclosed Feb 3, 2026Unverified

Iron Mountain says Everest breach limited to one folder of marketing files

Iron Mountain said a single compromised login was used to access one folder on a file-sharing server, mostly holding marketing materials, after the Everest extortion gang claimed 1.4 TB of data. The company said no customer confidential data was compromised.

What is known

People affected	Not stated in the sources we have
Disclosed	Feb 3, 2026
Attack	Extortion
Data exposed	Internal documents
Sector	Data brokers · US
Status	Unverified: not yet confirmed by an official notice, a filing or the organization

Sources

Newsbleepingcomputer.com

Iron Mountain: Data breach mostly limited to marketing materials

Notices filed

TotalFeb 3

ResearchCount not stated

Other breaches at Iron Mountain

Lost or stolen device breachLost or stolen device exposed names and health records. Reported to the HHS archive.50K affectedHealthcareUSAug 15, 2014

History of this record

Added2026-09-25

First recordedby seedSource

First seen 2026-09-25 (Research). Record counts are as reported. Not legal advice.

Everything about Iron Mountain