Skip to content
Back to Blog
high severity May 22, 2026 · 3 min read Unverified claim — what this is

Semgrep Listed by qilin Ransomware Group

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

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

Semgrep Listed by qilin Ransomware Group

On May 22, 2026, the qilin ransomware group added Semgrep to its public leak site, claiming that internal files had been exfiltrated from the code-security company during a ransomware attack. The listing affects anyone whose information was stored in those internal systems, including current and former employees, customers whose support tickets or contracts were saved internally, and partners whose details appeared in the compromised files.

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.

What's Publicly Reported from Reporting

Public reporting indicates that qilin operators gained access to Semgrep’s network, encrypted systems, and then exfiltrated a volume of internal documents before publishing a sample on their leak portal. The exact number of people impacted remains unknown because the company has not released a formal count of records or individuals. Available reporting describes the exposed material as internal files rather than a structured database of customer credentials. No public evidence has surfaced showing that customer passwords, payment card data, or Social Security numbers were taken, but the breach still places sensitive business correspondence, contracts, and contact lists at risk of public release if ransom demands are not met.

Why This Matters for You and Your Family

When a security vendor like Semgrep is breached, the ripple effects reach ordinary users. Your email address, support history, or licensing details may have been stored in the very files now held by attackers. Internal files exfiltrated often contain notes that link personal or family email accounts to specific software licenses, making it easier for criminals to target you with follow-on phishing or account takeover attempts. For families, this can mean a child’s school email used for a parent’s work trial suddenly becomes part of a larger data set that criminals can weaponize. The breach reminds us that even companies we trust to protect our code and data can become gateways to personal exposure.

The Doxxing and Identity-Chain Implications

Stolen internal files frequently contain more than names and emails. They can include support tickets, chat logs, IP addresses, and references to third-party accounts. Attackers routinely combine these fragments with data from earlier breaches to build an identity chain that links your work email to personal accounts, phone numbers, and even children’s online profiles. Once that chain exists, a single leaked support conversation can lead to doxxing, SIM-swapping attempts, or harassment campaigns. Credential leaks like this one also cascade into gaming account takeovers when family members reuse passwords across work tools and entertainment platforms.

Qilin’s Publicly Known Track Record

Public reporting attributes the qilin ransomware group with emerging in 2022 and rapidly expanding its list of victims across technology, healthcare, and professional services sectors. Notable prior targets have included software firms and mid-sized enterprises whose internal documents were later posted on the same leak site now hosting Semgrep’s data. The group’s typical playbook involves initial access through phishing or exploited remote desktop services, followed by exfiltration of sensitive files, deployment of ransomware, and then extortion that combines demands for payment with threats to publish stolen data. The Semgrep listing follows this pattern exactly, with the group setting an implicit deadline by simply posting the victim on its leak portal.

What to do

  • Run a DoxxScan to map every link between your handles, emails, phone numbers, and real identity so you can see exactly what chains back to the Semgrep files.
  • Rotate any password you ever used at Semgrep or related services, then 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 of your data is caught in hours, not months.
  • Cover the household with DoxxScan family coverage that extends to dependents and children’s gaming accounts that often chain back to the same addresses and emails.
  • Let remediation specialists handle takedown requests across data brokers and leak sites for you while you focus on securing accounts.

The Semgrep incident shows that even specialized security companies can become targets, and the data they hold about you can fuel larger identity-based attacks. Taking concrete steps now limits how far criminals can travel down the chain that begins with this claimed breach. DoxxScan by GalaxyWarden delivers continuous monitoring across 13.1B+ breach records and 100+ platforms, AI-powered identity-chain mapping, hands-on remediation by specialists, and full family and household coverage including children’s gaming accounts. Start your DoxxScan trial today to close the gaps this incident has created.

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
Semgrep 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
Disclosed May 22, 2026
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