Skip to content
Back to Blog
high severity December 17, 2023 · 3 min read Unverified claim — what this is

agc.com Listed by blackbasta Ransomware Group

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

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

agc.com Listed by blackbasta Ransomware Group

On December 17, 2023, Japanese glass manufacturer AGC Inc. (agc.com) appeared on the leak site of the Black Basta ransomware group. The listing states that attackers exfiltrated 1.5 TB of internal files during a ransomware incident. The company has not yet published a formal breach notification quantifying how many individuals are affected or detailing exactly which records reached the threat actors.

Already exposed?
You can’t unleak data. You can take away what it’s worth.
A leaked record is where it starts, not where it ends. What turns it into your front door is the look-up sites publishing your address beside your name — and those are what an AI reads when somebody asks about you. The free scan shows you both. We write to 582 companies.
See what is exposed about you — free scan →
Not ready yet? Run a free breach check on this email
We’ll check it against 13.1B+ leaked records right now — no account needed. Continuous monitoring & alerts are part of Protection.

Details in the Leak-Site Listing

The Black Basta portal lists AGC under its .com domain and describes the stolen material as “Internal files exfiltrated in ransomware attack.” Sample folders referenced include user personal folders, Technology, Human Resources, Finance, and additional corporate directories. The disclosure does not specify the exact number of employee or customer records involved, nor does it list particular document types such as passports, tax forms, or medical information. The posting simply states that data was taken and is held for extortion purposes.

Why This Matters for You and Your Family

When a global manufacturer like AGC suffers a breach, the personal folders of its employees, contractors, and business partners are often among the first items taken. If you or a family member ever worked at AGC, supplied the company, or had your information stored in its HR or finance systems, your details may now sit on a criminal server. Even without an exact headcount, the 1.5 TB volume signals that thousands of records are likely exposed. Once files leave the victim’s control, they can be traded, sold, or used to launch follow-on attacks against you personally.

The Doxxing and Identity-Chain Risk

Stolen internal folders frequently contain spreadsheets that link names, email addresses, phone numbers, dates of birth, and sometimes Social Security numbers or passport copies. Threat actors chain this information with data from previous breaches to build complete identity profiles. A single leaked work email can expose your home address, family member names, and even children’s school details when cross-referenced across public records and other stolen databases. These chains frequently lead to account takeovers on personal email, banking, and social media. Credential leaks like this one cascade into gaming-account takeovers when the same password protects a child’s Roblox, Fortnite, or Steam profile tied to the family address.

Black Basta’s Known Track Record

Public reporting attributes Black Basta’s emergence to early 2022. The group rapidly gained notoriety for double-extortion tactics: encrypting victim networks while simultaneously exfiltrating data for later public release. Notable prior victims include financial firms, healthcare providers, and manufacturers across North America, Europe, and Asia. Their typical playbook begins with initial access gained through compromised remote desktop credentials or phishing, followed by lateral movement, data theft, and deployment of ransomware. After encryption they demand payment within a short window—often one to two weeks—then publish samples or full datasets on their Tor site if unpaid. The AGC listing follows this exact pattern.

What to do

  • Run a DoxxScan to map every link between your handles, emails, phone numbers, and real-world identity, then use the cleanup to scrub what you can.
  • Rotate any password you ever used at AGC or related business systems, and enable 2FA through an authenticator app everywhere that password was reused.
  • Enable continuous DoxxScan monitoring across 13.1B+ breach records and 100+ platforms so the next exposure surfaces in hours rather than months.
  • Cover the household with DoxxScan family protection that extends to dependents and children’s gaming accounts that often chain back to the same breached corporate data.
  • Let DoxxScan remediation specialists handle takedown requests across data-broker sites and leak forums on your behalf.

The AGC breach is a reminder that even established industrial companies remain targets, and the data they hold about ordinary employees can fuel long-term identity crimes. Start protecting yourself and your family today with tools built for exactly these cascading threats. DoxxScan by GalaxyWarden delivers continuous monitoring across 13.1 billion+ breach records and more than 100 platforms, AI-powered identity-chain mapping that connects online handles to real identities, hands-on remediation by specialists, and full household coverage that includes children’s gaming accounts.

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
agc.com 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 December 17, 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