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Milliman Financial Risk Management LLC (Milliman, Inc. subsidiary)

akira

This record tracks a ransomware attack claimed by the akira group against Milliman Financial Risk Management LLC (Milliman, Inc. subsidiary). It collects the publicly disclosed attack details — sector, location and timeline — as published on the operator's leak site and indexed by Breach House.

Window Zero

EXPOSURE GAP

Window Zero is the time the breach stayed in the open before anyone said so — the gap between when the attack was first discovered on the operator's leak site (t1) and when it was publicly disclosed (t2). The wider this window, the longer victims, staff and customers were exposed with no warning.

341days open
t1 · Published t2 · Pending
Sep 25, 2025Not disclosed yet
Country
United States
Business Category
Finance / Legal / Insurance
Employees
101-1000
Discovered
2025-10-06
Published
September 25, 2025
Disclosed / Notified
Not disclosed yet
Victim ID
pmN40oaVwdNm

Attack Summary

Milliman Financial Risk Management LLC is a global leader in fina ncial risk management to the retirement savings industry. Establi shed in 1998, the practice includes over 200 professionals operat ing from three trading platforms around the world (Chicago, Londo n, and Sydney). Milliman FRM is a subsidiary of Milliman, Inc. We are going to upload 260gb of corporate data soon. Client infor mation (clients' financial portfolios, account balances, transfer s and so on), lots of internal operating files, financial and acc ounting files, contracts, agreements, projects, etc.

Leak Screenshots

SAMPLE

Proof-of-breach screenshots the operator posted from the stolen data. Previews are redacted and locked — the originals are available on HaveIBeenRansom.

file_tree.png
finance_2024.xlsx
passport_scan.jpg
contract_signed.pdf
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Dark Web Exposure

Findings for milliman.com — indexed by HaveIBeenRansom.
11
found in Infostealer logs
2,965+
found in Traditional breaches
35+
found in Ransomware leaks
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B F R e p o V 3 F i l e s · breach
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••• emails
+ 17 more leak sources locked
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