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high severity June 20, 2023 · 3 min read Unverified claim — what this is

STOCKMANBANK.COM Listed by clop Ransomware Group

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

Banking, Wealth Management and Insurance - Stockman Bank

— from Clop’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.
STOCKMANBANK.COM Listed by clop Ransomware Group

On June 20, 2023, Stockman Bank appeared on the leak site operated by the Clop ransomware group. The Montana-based institution, which provides banking, wealth management, and insurance services, is claimed to have had internal files exfiltrated during a ransomware attack. The listing does not specify the number of people affected or detail exactly which records were taken.

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Reported Details from the Listing

The Clop leak site states that Stockman Bank suffered a ransomware intrusion and that attackers successfully exfiltrated internal files. No sample data is publicly shown, and the posting does not quantify the volume or sensitivity of the stolen information. The disclosure indicates the bank was added to the extortion page on June 20, 2023, following the group’s standard practice of publishing victim names after initial contact and negotiation windows expire. Public reporting on Clop states the actor typically uses this listing as leverage to pressure organizations into payment.

Why This Matters for You and Your Family

When a regional bank like Stockman Bank loses control of internal files, the exposure can reach customers, borrowers, account holders, and anyone whose personal or financial documents were stored in those systems. Even though the exact data types remain undisclosed, banking environments routinely contain Social Security numbers, tax forms, loan applications, account statements, and correspondence that can be used for identity theft or fraud. If your family banks with Stockman or has done business with them, your information may now sit in an attacker’s archive. The breach also raises concern for small-business owners and agricultural clients who form a large part of the bank’s customer base in Montana and surrounding states.

The Doxxing and Identity-Chain Risk

Stolen internal files often contain more than isolated records; they can include spreadsheets that link names, addresses, phone numbers, email accounts, and sometimes employee or customer usernames. These details become the foundation of doxxing chains. Attackers or data resellers can correlate the bank data with credential leaks from other services, gaming platforms, or social-media accounts. Once a single handle ties back to your real identity and home address, the risk of targeted harassment, SIM-swapping, or follow-on extortion grows quickly. Credential leaks like this one cascade into account takeovers, especially for gaming accounts belonging to you or your children that reuse email addresses or passwords exposed in the banking files.

Clop’s Publicly Known Track Record

Public reporting attributes the emergence of Clop to 2019, when the group began deploying its namesake ransomware variant. The actor gained notoriety for double-extortion tactics: encrypting victim systems while simultaneously exfiltrating data for later public release. Notable prior victims include large corporations in healthcare, finance, and logistics sectors. Clop’s typical playbook involves initial access through compromised remote-desktop credentials or vulnerable file-transfer software, followed by lateral movement, data theft, and then ransom demands backed by the threat of leak-site publication. The group has repeatedly demonstrated willingness to publish sensitive corporate and personal files when payments are not made.

What to do

  • Run a DoxxScan to map every link between your handles, emails, phone numbers, and real identity, with cleanup handled by specialists.
  • Rotate any password you used at Stockman Bank or on related financial portals anywhere it has been reused, and switch to 2FA through an authenticator app rather than SMS.
  • Enable continuous DoxxScan monitoring across 13.1B+ breach records and 100+ platforms so the next exposure surfaces in hours instead of months.
  • Cover the household with DoxxScan family protection that extends to dependents and children’s gaming accounts that often chain back to the same addresses and emails.
  • Let remediation specialists manage takedown requests for any exposed personal documents that appear on data-broker or extortion sites.

The incident underscores that even established regional banks remain targets, and the data they hold can fuel long-term identity abuse long after the initial headline fades. Start your DoxxScan trial today and gain continuous monitoring across 13.1B+ breach records and 100+ platforms, AI-powered identity-chain mapping, hands-on remediation by specialists, and full household coverage that includes your children’s gaming accounts. Taking these steps now limits how far attackers can travel down the chain that begins with this claimed breach.

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 sample582 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.

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Report details & sourcing

Severity High
Disclosed June 20, 2023
Last reviewed August 8, 2026
Affected Unconfirmed
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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