Skip to content
Back to Blog
high severity September 20, 2023 · 4 min read Unverified claim — what this is

constantinecannon.com Listed by lockbit3 Ransomware Group

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

At Constantine Cannon, we are one law firm with two internationally renowned practices – antitrust and representing whistleblowers. We also excel at litigation, compliance, and intellectual property.Extracted SQL tables list and sample tablesht...

— from LockBit’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.
constantinecannon.com Listed by lockbit3 Ransomware Group

On September 20, 2023, the law firm Constantine Cannon appeared on the LockBit 3.0 ransomware leak site with a post claiming that internal files had been exfiltrated during a ransomware attack. The listing, hosted on the LockBit infrastructure and mirrored on ransomware.live, includes extracted SQL table listings and sample data screenshots but does not disclose the total number of records affected or name specific categories of client or employee information.

Already exposed?
You can’t unleak data. You can take away what it’s worth.
A leaked record is where it starts, not where it ends. What turns it into your front door is the look-up sites publishing your address beside your name — and those are what an AI reads when somebody asks about you. The free scan shows you both. We write to 582 companies.
See what is exposed about you — free scan →
Not ready yet? Run a free breach check on this email
We’ll check it against 13.1B+ leaked records right now — no account needed. Continuous monitoring & alerts are part of Protection.

Details from the Leak Site Listing

The primary disclosure on the LockBit 3.0 portal states that Constantine Cannon’s systems were compromised and that attackers successfully exfiltrated internal files before encrypting or threatening to publish them. The posting includes directory listings of extracted SQL tables and a handful of sample table screenshots, yet it stops short of quantifying the volume of data taken or specifying exact data types beyond “internal files.” No ransom demand figure is published on the leak page, and the notification does not indicate whether any client matter files, whistleblower records, or employee personal data were included. The firm’s own public statement acknowledges the incident as a ransomware attack but has not released a detailed breach notification to affected individuals as of the listing date.

Why This Matters for You and Your Family

When a prominent antitrust and whistleblower law firm suffers a breach, the exposure can reach far beyond the company’s walls. If you have ever been a client, an employee, a vendor, or even named in a matter handled by Constantine Cannon, your personal information may now sit in an attacker-controlled archive. Internal files exfiltrated in such attacks frequently contain names, addresses, dates of birth, Social Security numbers, financial details, and correspondence that can be used for identity theft or targeted fraud. Even without an exact victim count, the mere presence of the firm on a ransomware leak site means your data could be one download away from criminals who sell, trade, or weaponize it. Families are affected because household members often share the same addresses, phone numbers, and email domains listed in professional records.

The Doxxing and Identity-Chain Risk

Ransomware operators rarely stop at dumping a single database. Once internal files leave the victim’s network they enter an ecosystem where data brokers, underground markets, and automated scrapers link disparate records together. A leaked email from a Constantine Cannon matter can be correlated with your gaming username, your child’s school email, or a family member’s phone number. These identity chains allow attackers to reset accounts, impersonate you to banks, or launch spear-phishing campaigns that feel personally tailored. Credential leaks of this nature routinely cascade into account takeovers on gaming platforms, where children’s profiles become entry points for further extortion or doxxing. The longer the data sits on the leak site, the higher the chance that multiple criminal groups have already copied and enriched it.

LockBit 3.0’s Known Track Record

Public reporting attributes the LockBit 3.0 variant to a ransomware-as-a-service operation that first emerged in early 2020 under the original LockBit name and rebranded to LockBit 3.0 in 2022 after law-enforcement pressure. The group has claimed responsibility for attacks on hundreds of organizations worldwide, including healthcare providers, financial firms, and professional-services companies. Their typical playbook involves initial access through compromised remote desktop credentials or exploited vulnerabilities, followed by rapid lateral movement, data exfiltration, and dual extortion—demanding payment both to decrypt systems and to prevent publication of stolen files. LockBit 3.0 operators frequently set short deadlines, threaten to notify clients or regulators, and auction unsold data on their portal when victims refuse to pay.

What to do

  • Run a DoxxScan to map every link between your handles, emails, phone numbers, and real identity, taking advantage of cleanup offered by GalaxyWarden specialists.
  • Enable continuous DoxxScan monitoring across 13.1B+ breach records and 100+ platforms so the next exposure surfaces in hours rather than months.
  • Rotate any password you used at Constantine Cannon or related services anywhere it has been reused, and switch to 2FA through an authenticator app instead of SMS.
  • Cover the entire household with DoxxScan family protection that extends to dependents and children’s gaming accounts, which often chain back to the same breached address or parent email.
  • Let remediation specialists handle data-broker takedown requests and ongoing monitoring so you do not have to chase every new appearance of your information manually.

The Constantine Cannon listing is a reminder that even sophisticated law firms can fall victim to well-organized ransomware operations, and the data they hold about ordinary people can fuel long-term identity crimes. Start your DoxxScan trial today; its continuous monitoring, AI-powered identity-chain mapping, hands-on remediation by specialists, and household coverage—including children’s gaming accounts—gives families a practical defense against the cascading risks that follow every new leak. By acting quickly you limit 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.

Check your exposure
constantinecannon.com is one listing. Your email is probably in others.
We can’t confirm any single incident against the sources we search, so we won’t pretend to. What we can show you is your own exposure — your email against 13.1B+ leaked records and the sites that publish your address. About 15 seconds. No account, no card.

By running your scan you agree to the Terms and Conditions and the Privacy Policy, and to GalaxyWarden emailing you the results of this scan.

Report details & sourcing

Severity High
Disclosed September 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.
Share this Post on X Reddit Email