high severity November 25, 2025 · 3 min read Unverified claim — what this is

MSK Listed by SilentRansomGroup Ransomware Group

If you are a customer of MSK, here’s what is being claimed, and what it would mean for you.

MSK was listed on SilentRansomGroup's leak site. SilentRansomGroup claims to have stolen internal data. This is the group's claim, not a confirmed finding.

MSK Listed by SilentRansomGroup Ransomware Group

On November 25, 2025, law firm Mitchell Silberberg & Knupp, known as MSK, appeared on the leak site of the ransomware group SilentRansomGroup. The firm, established in 1908, is claimed to have had internal files exfiltrated during a ransomware attack. While the exact number of people whose data may have been exposed remains unknown, any client, employee, or vendor whose information passed through the firm could be affected.

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What Public Reporting Shows

Public reporting indicates that internal files were taken. The listing appeared on the group's leak site on November 25, 2025. MSK provides legal services across entertainment, media, technology, and other sectors, meaning the compromised data could include contracts, correspondence, financial records, and personal details of individuals and families who engaged the firm. No confirmed total of victim counts or specific data types such as Social Security numbers has been publicly detailed yet. The incident follows the group's typical pattern of exfiltrating data before encrypting systems and later threatening to publish it.

Why This Matters for You and Your Family

When a law firm like MSK suffers a breach, the information exposed often belongs to ordinary people — clients who trusted the firm with sensitive family, financial, or employment matters. If your documents were part of those internal files, the details could be used to target you with identity theft, phishing, or more sophisticated scams. Your family members' information may also be linked through shared addresses, phone numbers, or joint accounts. Even if you never directly hired the firm, vendor records or employee data can still place you in the chain of exposure.

Credential leaks from incidents like this frequently cascade into account takeovers elsewhere. A password or email address taken from one service can unlock access to banking, email, or social media accounts that hold far more personal data.

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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 SilentRansomGroup · 159 incidents tracked →

Severity High the filing does not enumerate what was exposed

Disclosed November 25, 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.

Threat-actor tracker

SilentRansomGroup — 159 incidents tracked

Every breach we've attributed to SilentRansomGroup, in one running log. See who else they've hit →

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