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high severity June 10, 2024 · 3 min read Unverified claim — what this is

tdsb.on.ca Listed by lockbit3 Ransomware Group

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

The Toronto District School Board, also known under the acronym of TDSB, is the largest school Board in Canada and the fourth largest in North America

— 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.
tdsb.on.ca Listed by lockbit3 Ransomware Group

On June 10, 2024, the Toronto District School Board appeared on the LockBit 3.0 ransomware leak site, claiming that internal files had been exfiltrated during a ransomware attack on tdsb.on.ca. The listing states that data was stolen but does not specify the volume of records or the exact types of files taken. Anyone whose personal information, student records, or employment details are held by Canada’s largest school board may now face heightened risk of identity theft and doxxing.

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Reported Details from the Listing

The LockBit 3.0 leak page explicitly names the Toronto District School Board and states that internal files were exfiltrated following a ransomware intrusion. No victim count is provided, and the disclosure does not list specific data categories such as names, addresses, Social Insurance Numbers, student grades, or employee payroll information. The posting follows the group’s standard format: an announcement of successful data theft with samples or full archives made available to pressure the victim. Publicly accessible mirrors of the leak site, tracked by ransomware.live, first indexed the TDSB entry on June 10, 2024.

Why This Matters for You and Your Family

If you or your children attend or work within the TDSB system, your information is likely stored in the very files now held by attackers. School boards maintain permanent records that include full legal names, home addresses, dates of birth, parent contact details, medical notes, and sometimes Social Insurance Numbers for staff. Once exfiltrated, this data does not expire. It can be sold quietly on dark-web forums or used immediately for targeted fraud, account takeovers, or spear-phishing campaigns against families. The breach therefore touches not only current students and employees but also alumni and former staff whose records remain archived.

Doxxing and Identity-Chain Risks

School-board data is especially dangerous because it creates direct links between real-world identities and online handles. A child’s student ID or parent email can be cross-referenced with gaming accounts, social-media profiles, and family addresses. Attackers routinely chain these pieces together: an email from the breach leads to a reused password on a gaming platform, which yields chat logs containing additional personal details, which in turn expose the household’s physical location. The result is persistent doxxing that can affect college applications, employment background checks, or even physical safety years later. Credential leaks like this one cascade into account takeovers and doxxing chains that conventional breach alerts rarely catch in time.

LockBit 3.0 Track Record

Public reporting attributes the LockBit 3.0 variant to a ransomware-as-a-service operation that first appeared in 2020 and rebranded after law-enforcement pressure in early 2022. The group has claimed responsibility for attacks on hundreds of organizations worldwide, including hospitals, manufacturers, and several other North American school districts. Their typical playbook begins with initial access gained through compromised credentials or exploited remote-desktop services, followed by rapid lateral movement, data exfiltration, and then dual extortion: threatening both encryption and public release of stolen files. LockBit 3.0 operators frequently set short payment deadlines and auction unsold data on their leak site when victims refuse to pay.

What to do

  • Run a DoxxScan to map every link between your handles, emails, phone numbers, and real identity, with cleanup handled by 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 have used on tdsb.on.ca or related TDSB services anywhere it is reused, 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 school records.
  • Let remediation specialists manage takedown requests for any exposed personal documents appearing on data-broker or extortion sites.

The TDSB incident demonstrates that even large, well-known public institutions remain vulnerable, and the data they hold about your family can surface without warning on ransomware leak sites. Staying ahead requires more than reactive checks; it demands continuous visibility and expert intervention. DoxxScan by GalaxyWarden delivers exactly that through continuous monitoring across 13.1B+ breach records and 100+ platforms, AI-powered identity-chain mapping, hands-on remediation by specialists, and household coverage that includes children’s gaming accounts. Start your DoxxScan trial today to close the gaps before the next breach exposes you.

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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tdsb.on.ca is one listing. Your email is probably in others.
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Report details & sourcing

Severity High the filing does not enumerate what was exposed
Disclosed June 10, 2024
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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