Norway Savings Bank customer data exposed via Marquis attack

Cybernews • November 22, 2025

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Norway Savings Bank warns 51000 customers of data exposure after software provider Marquis suffered ransomware attack affecting multiple US banks.

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Norway Savings Bank Data Breach Affects 51,000 Customers Norway Savings Bank (NSB) has reported a data breach that may have exposed the personal information of approximately 51,000 customers due to a ransomware attack on their software provider, Marquis. The breach is linked to a security incident involving a vendor, with NSB stating there is no evidence of misuse of the compromised data. 4 sources 40

Extracted Entities

Attack Types (1)

Companies (1)

Norway Savings Bank

Countries (1)

Ransomware Groups (1)