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high severity April 09, 2023 · 4 min read Unverified claim — what this is

Cementos Bio-Bio Listed by blackbyte Ransomware Group

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

Cementos Bio Bio S.A. manufactures and sells cement in Chile and internationally. It provides clinker, pozzolana, gypsum, pozzolanic portland, and other cement; and concrete products for housing, buildings, pavement, infrastructure, and mining projects.

— 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.
Cementos Bio-Bio Listed by blackbyte Ransomware Group

Cementos Bio-Bio was listed on the BlackByte ransomware leak site on April 09, 2023, claiming that the Chilean cement manufacturer suffered a ransomware attack in which internal files were exfiltrated. The company, which produces clinker, pozzolana, gypsum, and various cement and concrete products for construction and mining projects across Chile and internationally, has not publicly quantified how many individuals or records may be affected.

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Primary Disclosure Details

The BlackByte leak site listing states that Cementos Bio-Bio was hit by a ransomware attack and that attackers successfully exfiltrated internal files. The disclosure does not specify the volume of data taken, the exact types of documents involved, or any ransom demand. It simply states the company as a victim and displays samples of the allegedly stolen material. No subsequent regulatory filing or customer notification from Cementos Bio-Bio has altered or expanded on these core facts.

April 09, 2023 marks the date the listing appeared, making this the primary public disclosure of the incident.

Why This Matters for You and Your Family

When a company that supplies materials for housing, infrastructure, and mining projects is breached, the internal files taken can easily contain information that touches ordinary people. Contractors, suppliers, employees, and even customers may have had personal or financial details stored in those systems. Even if the leak site does not detail what was taken, the mere fact that internal files left the network creates long-term exposure. Your data does not need to be in the public sample set to be at risk; once exfiltrated it can circulate in underground markets for years.

This incident is a concrete reminder that businesses you interact with, even indirectly through construction projects or employment, can become gateways to identity compromise.

Doxxing and Identity-Chain Implications

Ransomware operators rarely stop at encryption. They exfiltrate data precisely so they can pressure victims by threatening to publish or sell it. In this case the exposed internal files can serve as the starting point for doxxing chains that link corporate identifiers to personal ones. An employee email address found in a leaked spreadsheet, combined with a phone number or project invoice, quickly leads to home addresses, family member names, and social-media profiles. These linkages allow attackers or opportunistic criminals to target you or your family with phishing, SIM-swapping, or direct extortion.

Credential leaks like this one frequently cascade into account takeovers, especially for any reused passwords tied to corporate systems. Gaming accounts belonging to you or your children are particularly vulnerable because they often share the same email addresses or recovery phone numbers listed in business files.

BlackByte's Known Track Record

Public reporting attributes BlackByte with emerging in mid-2021 and rapidly adopting a double-extortion model that combines encryption with data theft and public shaming. The group has targeted organizations across manufacturing, healthcare, education, and critical infrastructure sectors. Notable prior victims include U.S. healthcare providers, European manufacturers, and municipal governments. Their typical playbook begins with initial access gained through phishing, remote desktop protocol brute-force, or exploited vulnerabilities, followed by lateral movement, data exfiltration, and deployment of ransomware. After encryption they wait for the victim to refuse payment before publishing samples on their leak site, applying pressure through both operational disruption and reputational harm. The exact tactics used against Cementos Bio-Bio remain unknown, but the group’s established pattern aligns with the listing observed on April 09, 2023.

What to do

  • Run a DoxxScan to map every link between your handles, emails, phone numbers, and real identity, with cleanup handled by specialists.
  • Rotate any password you used at Cementos Bio-Bio or related vendor portals anywhere it has been reused, and enable 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 protection that extends to dependents and children’s gaming accounts that often chain back to the same addresses and credentials.
  • Let remediation specialists manage takedown requests for any exposed personal information found circulating on data-broker sites or forums.

The Cementos Bio-Bio breach demonstrates that even seemingly distant corporate incidents can place your family’s personal information in the hands of calculated extortionists. Staying ahead requires more than reactive checks; it demands continuous visibility and decisive action. 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 full household coverage that includes children’s gaming accounts. Source: https://www.ransomware.live/id/Q2VtZW50b3MgQmlvLUJpb0BibGFja2J5dGU=

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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Report details & sourcing

Severity High the filing does not enumerate what was exposed
Disclosed April 09, 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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