International School of Management (ISM)

International School of Management (ISM)

Data Breach on December 20, 2023
Data Breach Report
Victimism.de
Claimed ByPlay
Date DiscoveredDec 20, 2023
DescriptionThe International School of Management (ISM) is one of the leading private business schools in Germany.
Leak SizeUnknown

Credential Exposure for ism.de

We've indexed 1,022 @ism.de accounts from external breaches, plus 29 credentials for ism.de itself.

Last checked Oct 4, 2026

@ism.de addresses from external breaches
Third-party breaches922 accounts · across 136 breaches · 683 with a plaintext password · most recent Jan 8, 2026
Combo lists327 accounts · most recent Oct 3, 2026
Passwords for ism.de accounts
Combo lists19 logins · most recent Sep 25, 2026
Infostealer logs11 logins · 8 infected devices · most recent Sep 4, 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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