Skip to content
Back to Blog
high severity March 20, 2023 · 3 min read Unverified claim — what this is

Kelly Group Listed by BlackByte Ransomware Group

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

Kelly Group has been at the forefront of the telecommunications industry for more than 35 years, installing the very first customer cable television service on 17th September 1985.Established to support the emerging UK cable television market, Kelly Group has grown and diversified to meet the needs of our clients and their customers.

— from Blackbyte’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.
Kelly Group Listed by BlackByte Ransomware Group

On March 20, 2023, Kelly Group, a UK telecommunications company with more than 35 years of operation, appeared on the leak site of the BlackByte ransomware group. The listing states that internal files were exfiltrated during a ransomware attack. The company, which installed the UK’s first customer cable television service on 17 September 1985, has not publicly quantified how many individuals or records may be affected.

Watch Kelly Group

Get alerted the next time Kelly Group files a breach with any US regulator — the filing, dated and sourced. A free single-company slice of Signals; no account needed.

We’ll email you only about Kelly Group’s future breach filings and how to watch a whole vendor list — not general marketing. Unsubscribe any time.

Watching your whole vendor list (50 to 500 companies, by tier) is GalaxyWarden Signals.

Reported Details from the Listing

The BlackByte leak site entry states that Kelly Group suffered a ransomware intrusion and that attackers successfully removed internal files. The disclosure does not specify the volume or exact nature of the data taken, nor does it list particular categories such as customer records, employee payroll, or contracts. It simply states that data was exfiltrated and gives the victim a deadline to negotiate before further publication. Public copies of the listing, preserved via ransomware.live at https://www.ransomware.live/id/S2VsbHkgR3JvdXBAYmxhY2tieXRl, remain the sole primary source of information available to date.

Exposure Pack · one payment
The full list, and what to lock in ten minutes.
  • Every indexed leak tied to your address — all of them, named and dated
  • What this kind of incident typically exposes
  • A ten-minute lock list written for this kind of organisation
One payment. Nothing renews, and no account is created. Emailed to you within a minute.

Why This Matters for You and Your Family

When a telecommunications installer like Kelly Group loses control of internal files, the exposure often reaches beyond the company itself. Customer contracts, service addresses, contact numbers, and employee details frequently sit inside shared folders that ransomware groups target. If your home was cabled by Kelly Group, your address, installation date, or billing contact may now sit in an attacker’s archive. Even without exact record counts, the risk is concrete: any personal information stored in those systems can be used for identity theft, phishing, or sold quietly on underground forums. Families who have lived at the same property for years are especially likely to appear in legacy customer databases.

The Doxxing and Identity-Chain Risk

Exfiltrated internal files rarely contain isolated facts. A single spreadsheet can link a name, phone number, email address, and physical premises. Attackers then cross-reference those details with other breaches to build complete identity chains. One leaked work email leads to personal accounts; a service address ties to family members listed on the same account. These chains accelerate doxxing because they give criminals the exact material needed to impersonate you, reset passwords, or target your children’s online profiles. Credential leaks of this type routinely cascade into gaming-account takeovers, where stolen logins are tested across Steam, Roblox, or Fortnite and then used to pressure families for ransom.

BlackByte’s Known Track Record

Public reporting attributes BlackByte’s first significant campaigns to mid-2021. The group has since hit manufacturing, healthcare, education, and technology firms across North America and Europe. Their typical playbook begins with initial access gained through compromised remote desktop credentials or phishing, followed by rapid lateral movement inside victim networks. Once inside, BlackByte exfiltrates data before deploying ransomware and later posts samples on their leak site if the target refuses to pay. The group has shown willingness to publish sensitive operational files rather than just customer lists, increasing the chance that internal Kelly Group documents could surface in full.

What to do

  • Run a DoxxScan to map every link between your handles, emails, phone numbers, and real identity, then use the cleanup of Warden to remove what you can.
  • 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 have reused at Kelly Group or related telecom providers and switch to 2FA through an authenticator app instead of SMS.
  • Cover the 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 repeated takedown requests across data brokers and leak sites on your behalf.

The Kelly Group incident shows that even established infrastructure companies remain targets, and the data they hold about ordinary customers can fuel long-term identity abuse. Start your DoxxScan trial today; its continuous monitoring, AI-powered identity-chain mapping, hands-on remediation by specialists, and household coverage give you and your family a practical defence against the next breach that touches your life. DoxxScan is also effective for protecting gaming accounts because credential leaks like this one routinely cascade into account takeovers and doxxing chains.

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.

Check your exposure
Kelly Group 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 the filing does not enumerate what was exposed
Disclosed March 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