high severity March 21, 2025 · 3 min read Unverified claim — what this is

Cayman National Bank Listed by KillSec Ransomware Group

If you are a client of Cayman National Bank, here’s what is being claimed, and what it would mean for you.

Cayman National Bank was listed on the killsec ransomware leak site. The group claims to have stolen internal data.
— from KillSec’s own leak-site posting. This is the group’s claim, quoted verbatim; it is not GalaxyWarden’s reporting and has not been independently verified.

Cayman National Bank Listed by KillSec Ransomware Group

On March 21, 2025, Cayman National Bank appeared on the leak site of the ransomware group killsec, which claims to have exfiltrated internal files during a ransomware attack on the financial institution.

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What Public Reporting Shows

Public reporting indicates that killsec added Cayman National Bank to its data-leak portal and posted a notice stating it had obtained internal documents. The exact volume of data and the number of customers affected remain undisclosed. No samples of the stolen material have been publicly released by the group as of the latest available information. The bank has not issued a formal statement confirming the breach or detailing what records were taken.

Available reporting describes the incident as a classic ransomware pattern: initial compromise, encryption of systems, and subsequent threat of public release if ransom demands are not met. Industry research from sources such as DoxxScan™ continuous monitoring indicates that financial institutions remain frequent targets because customer records, account details, and internal operational files hold high value on underground markets.

Why This Matters for You and Your Family

When a bank suffers a breach, the information at risk often includes names, addresses, account numbers, transaction histories, and sometimes Social Security numbers or tax identifiers. Even if you do not hold an account at Cayman National Bank, credential leaks from one institution cascade into other services where you reuse the same email, password, or security questions.

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What the free scan actually returns

Sample resultyou@email.comIllustrative — not a real person

Found on people-search siteswe remove these

These listings are live, public, and legal to remove — and removing them is what we do.

value redacted in this sampleage, relatives, address historySpokeo

value redacted in this samplephone, household, property recordsBeenVerified

value redacted in this sample580 companies checked

Found in breach recordsverifiedreported — unverified

Each record is labeled: confirmed breach data, or an attacker’s claim no one has verified.

verifiedvalue redacted in this samplepassword + phone · 2024telecom breach

unverifiedvalue redacted in this sampleclaimed in ransomware listing · 2026leak-site claim

Leaked data cannot be deleted from the internet — anyone claiming otherwise is lying. Broker listings can be removed. We do the second, and show you exactly what to fix from the first.

Report details & sourcing

Attributed to KillSec · 285 incidents tracked →

Severity High the filing does not enumerate what was exposed

Disclosed March 21, 2025

Last reviewed August 8, 2026

Affected Unconfirmed

By GalaxyWarden Threat Research · Editorial & sourcing standards

Unverified claim — what this report is

This page documents a public listing on a ransomware/extortion group’s leak site, tracked via public threat-intelligence sources. A listing is the attacker’s claim. GalaxyWarden aggregates and reports such claims; we have not independently verified that a breach occurred, what data (if any) was taken, or the accuracy of anything the group asserts, and the named organisation has not necessarily confirmed the incident. Sections above describe what the listing shows and the group’s documented history — not verified findings about the named organisation. If you represent this organisation and believe anything here is inaccurate, tell us and we’ll review it promptly.

Editorial & sourcing policy

GalaxyWarden is a breach-monitoring service and news aggregator. We do not exfiltrate, host, purchase, or redistribute stolen data. Breach information is compiled from publicly accessible sources and threat-intelligence platforms, and is reported as claims attributed to their source. We promptly correct or remove material shown to be inaccurate — see our content & takedown policy or write to support@galaxywarden.com.

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KillSec — 285 incidents tracked

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