Putnam

Putnam

Data Breach on June 15, 2023
Data Breach Report
Victimputnam.com
Threat ActorCL0P
Date DiscoveredJun 15, 2023
DescriptionPutnam Investments is a global money management firm with 75 years of investment experience.
Leak SizeUnknown

Credential Exposure for putnam.com

We've indexed 1,624 @putnam.com accounts from external breaches, plus 206 credentials for putnam.com itself.

Last checked Aug 23, 2026

@putnam.com addresses from external breaches
Third-party breaches1,602 accounts · across 148 breaches · 1,377 with a plaintext password · most recent Feb 7, 2026
Combo lists406 accounts · most recent Aug 20, 2026
Passwords for putnam.com accounts
Combo lists198 logins · most recent Aug 21, 2026
Infostealer logs42 logins · 25 infected devices · most recent Aug 7, 2026

Logins may belong to customers or to staff, and the data doesn't say which. None of this is necessarily connected to the ransomware attack above.

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