high severity December 04, 2025 · 3 min read Unverified claim — what this is

Peter Meijer Architect Listed by Qilin Ransomware Group

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

Peter Meijer Architect was listed on the qilin ransomware leak site. The group claims to have stolen internal data.
— from Qilin’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.

Peter Meijer Architect Listed by Qilin Ransomware Group

On December 4, 2025, architecture firm Peter Meijer Architect appeared on the leak site of the qilin ransomware group. The attackers claim to have stolen internal files and are offering them for public download after the company did not meet their demands.

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 580 companies.

See what is exposed about you — free scan →

Watch Peter Meijer Architect

Get alerted the next time Peter Meijer Architect files a breach with any US regulator — the filing, dated and sourced. A free single-company slice of Signals; no account needed.

We’ll email you only about Peter Meijer Architect’s future breach filings and how to watch a whole vendor list — not general marketing. Unsubscribe any time.

Watching your whole vendor list (50 to 500 companies, by tier) is GalaxyWarden Signals.

Reported Details from Reports

Public reporting indicates the firm was listed on the qilin leak portal with samples of allegedly exfiltrated data. The exact volume of records exposed remains unclear, but the group states it obtained internal documents during a ransomware incident. No customer or employee names have been publicly detailed in the initial leak notice, yet the posting states that sensitive business files are now available on a dark-web leak site. Industry trackers such as ransomware.live documented the entry on the stated date, and the listing includes a countdown timer typical of the group’s extortion process.

Why This Matters for You and Your Family

When a company that handles building plans, contracts, addresses, or payment records is breached, your personal information can easily be caught in the net. If you have ever worked with an architecture firm, hired contractors, or lived in a recently built or renovated home, your name, address, phone number, or email could sit inside those internal files. Internal files exfiltrated often contain spreadsheets of clients, vendors, and project details that map directly back to ordinary families. Once that data reaches public leak sites, it circulates quickly among identity thieves, stalkers, and fraudsters who combine it with other breaches to build complete profiles.

The Doxxing and Identity-Chain Risks

A single breach rarely stops at one company. Attackers use leaked emails, phone numbers, and addresses to locate associated online accounts, social-media handles, and even children’s gaming profiles. This creates an identity chain that can lead to doxxing, account takeovers, or targeted harassment. Credential leaks like this one frequently cascade into gaming platforms because families often reuse passwords or security questions across work, home, and play. Public reporting shows these chains allow criminals to move from a business file to a family’s daily digital life within days.

You’ve used today’s 5 free articles · resets tomorrow

Create a free account to keep reading

The rest of this article comes straight back — free, no card, nothing you’ve already read goes away. Then see whether your own data is exposed too: the scan on this site is free with or without an account, and the account is what keeps the result after the emailed link expires.

Free reader account

No card, no charge. You read the blog without a limit — every article, no daily count — and it saves your exposure-scan results so you can open them again after the emailed link expires. We won’t email you anything else unless you tick the box asking us to. The next step shows what the paid plans add — free stays the first option on it.

Create a free account →

Free accounts are for personal use. If you’re reading for a company, that’s Signals (terms).

Reading this for a company?

GalaxyWarden Signals watches the organisations you name and emails you when one of them actually discloses — SEC 8-K Item 1.05 filings and corroborated breach records, with a JSON API. It monitors companies, not people: it does not scan you and does not remove your personal data.

See GalaxyWarden Signals →

Or make a free reader account first

Already have an account? Log in

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 sample580 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.

Report details & sourcing

Attributed to Qilin · 2349 incidents tracked →

Severity High the filing does not enumerate what was exposed

Disclosed December 04, 2025

Last reviewed August 8, 2026

Affected Unconfirmed

By GalaxyWarden Threat Research · Editorial & sourcing standards

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.

Threat-actor tracker

Qilin — 2349 incidents tracked

Every breach we've attributed to Qilin, in one running log. See who else they've hit →

Related breaches

high October 01, 2026