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high severity November 01, 2023 · 3 min read Unverified claim — what this is

gannons.co.uk Listed by apt73 Ransomware Group

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

Gannons Commercial Law Limited Catherine Gannon, then a tax solicitor at a large US law firm, lo...

— from Blackbasta’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.
gannons.co.uk Listed by apt73 Ransomware Group

Gannons Commercial Law Limited was listed on the leak site of the ransomware group apt73 on November 01, 2023. The UK-based firm, which provides commercial legal services, is claimed to have had internal files exfiltrated during a ransomware attack. The disclosure indicates that affected individuals include clients and others whose information appeared in the stolen materials, though the exact number of people impacted remains unknown.

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Details from the Leak Site

The apt73 leak site listing states that Gannons suffered a ransomware incident in which internal files were exfiltrated. It does not specify the volume of data taken, the precise types of records involved beyond internal files, or any ransom demand. The entry simply states the breach occurred and that the group possesses the exfiltrated material. Public reporting on similar listings shows that such postings often serve as proof of compromise and a warning ahead of potential data publication or further extortion.

Why This Matters for You and Your Family

When a law firm like Gannons experiences a breach, the exposure can reach far beyond the company itself. Internal files frequently contain client names, addresses, financial details, legal correspondence, and other sensitive personal information. If your data was included, it could be used for identity theft, targeted fraud, or phishing attacks tailored to your specific legal or financial matters. Families who have used legal services for wills, property transactions, business setup, or tax advice may find themselves at higher risk because this type of information paints a detailed picture of your life, assets, and vulnerabilities.

Doxxing and Identity-Chain Risks

Exfiltrated legal documents often link email addresses, phone numbers, home addresses, and full names in ways that accelerate doxxing. Attackers can chain these details with information from other breaches to build complete profiles. A single exposed legal file might reveal not only your identity but also relationships with family members, children’s names, or associated online accounts. This creates cascading risks where one breach leads to account takeovers on email, banking, or social media. Credential leaks of this nature frequently cascade into gaming account compromises for both adults and children, enabling further harassment or identity theft that starts from an innocent family member’s username and spreads outward.

apt73’s Known Track Record

Public reporting attributes apt73 with emerging as a ransomware and extortion operation in late 2022. The group has targeted organizations across multiple sectors, including professional services firms, using a playbook that typically involves initial access through phishing or exploited vulnerabilities, followed by data exfiltration before deploying ransomware. Their extortion style combines encryption of victim systems with public shaming on leak sites when demands are not met. While the full scope of their prior victims is still being tracked, apt73 follows patterns seen in other ransomware groups that prioritize pressure through data exposure rather than solely relying on file recovery.

What to do

  • Run a DoxxScan to map every link between your handles, emails, phone numbers, and real identity, with cleanup handled by the service.
  • Rotate any password used at Gannons or related services anywhere it is 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 coverage that extends to dependents and children’s gaming accounts vulnerable to credential chaining from breaches like this.
  • Let remediation specialists manage takedown requests for any exposed personal information appearing on data broker sites or forums.

The incident underscores how even a single professional services breach can ripple into long-term identity risks for ordinary families. Staying ahead requires more than reactive checks. DoxxScan by GalaxyWarden delivers continuous monitoring across 13.1 billion-plus breach records and over 100 platforms, AI-powered identity-chain mapping, and hands-on remediation by specialists, with household coverage that includes children’s gaming accounts. Source: apt73 leak site via ransomware.live

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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gannons.co.uk is one listing. Your email is probably in others.
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Report details & sourcing

Severity High
Disclosed November 01, 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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