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high severity May 06, 2024 · 3 min read Unverified claim — what this is

arcus.pl Listed by lockbit3 Ransomware Group

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

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

arcus.pl Listed by lockbit3 Ransomware Group

Arcus S.A., the Polish company behind arcus.pl, appeared on the LockBit 3.0 ransomware leak site on May 06, 2024. The listing states that internal files were exfiltrated during a ransomware attack. The notification does not disclose the number of people affected or specify which exact records were taken, leaving thousands of individuals whose personal data may have been exposed uncertain about the full scope of the breach.

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Primary Disclosure Details

The LockBit 3.0 leak site listing states that Arcus S.A., located at ul. Kolejowa 5/7, 01-217 Warszawa, had data stolen in a ransomware incident. The posted material includes what appears to be customer consent forms referencing the company’s privacy policy, data processing agreements, and contact details for Arcus and its capital-group entities. No precise volume of records is published, and the listing does not detail additional categories such as financial information or employee records. The disclosure follows the group’s standard practice of publishing samples after an initial extortion window expires.

Why This Matters for You and Your Family

When a company that handles consent forms, addresses, and business relationships suffers a ransomware breach, your personal information can end up in the hands of criminals. Even if the exact data types remain unknown, the exposed files likely contain names, contact details, tax identifiers, and consent records tied to real individuals. For ordinary families this creates immediate risk of spam, phishing campaigns, and more targeted fraud attempts that can affect bank accounts, tax filings, or credit applications. Children’s information linked through family records can also surface in follow-on attacks.

Doxxing and Identity-Chain Risks

Stolen internal files often serve as the starting point for doxxing chains. A single email or address from the Arcus leak can be correlated with gaming usernames, social-media handles, and other breached credentials to build a complete identity profile. This linkage turns a corporate breach into personal exposure: attackers can hijack accounts, demand payment, or publicly release sensitive household details. Credential leaks like this one frequently cascade into gaming account takeovers, where children’s profiles become entry points for further harassment or extortion.

LockBit 3.0 Track Record

Public reporting attributes LockBit 3.0 as the latest iteration of one of the most active ransomware operations, which first gained notoriety in 2019 and rebranded after law-enforcement pressure in early 2022. The group has hit hospitals, manufacturers, and professional-services firms across dozens of countries. Their typical playbook involves initial access through compromised remote-desktop credentials or vulnerable web applications, followed by rapid exfiltration of internal shares before deploying encryption. They then demand ransom and, if unpaid, publish data on their leak site with countdown timers. The Arcus listing fits this established pattern of double-extortion.

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.
  • 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 on arcus.pl or related Arcus services wherever it appears, 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 vulnerable to credential chaining from this claimed breach.
  • Let remediation specialists manage data-broker takedown requests and follow-up monitoring on your behalf.

The Arcus breach is a reminder that even mid-sized companies holding ordinary customer consent records can become gateways to identity theft. Acting quickly on the information now available limits how far attackers can travel down the chain. DoxxScan by GalaxyWarden delivers continuous monitoring across 13.1 billion+ breach records and more than 100 platforms, AI-powered identity-chain mapping, hands-on remediation by specialists, and full household coverage that includes children’s gaming accounts at risk from leaks like this one.

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
arcus.pl 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 May 06, 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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