high severity November 13, 2023 · 3 min read Unverified claim — what this is

ASM GLOBAL Listed by ALPHV Ransomware Group

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

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

ASM GLOBAL Listed by ALPHV Ransomware Group

On November 13, 2023, venue management giant ASM Global appeared on the leak site of the Alphv ransomware group. The listing states that internal files were exfiltrated during a ransomware attack on the Los Angeles-based company responsible for operating stadiums, convention centers, theaters, and other major event venues across the world. Anyone whose personal information passed through those venues or their associated ticketing, membership, or vendor systems may now be exposed.

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 Asm Global

Get alerted the next time Asm Global 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 Asm Global’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 the Leak

The Alphv leak-site entry explicitly lists ASM Global as a victim and claims that internal files were exfiltrated. It does not publish the number of affected individuals, the exact data types stolen, or the ransom demand. The disclosure indicates the data was taken during a ransomware intrusion but provides no further breakdown of contents such as customer databases, employee records, contracts, or payment information. Public mirrors of the leak site, including ransomware.live, continue to host the original posting at the .onion address without additional detail.

Why This Matters for You and Your Family

When a company that manages ticket sales, season passes, VIP memberships, and vendor relationships for large venues is breached, the ripple effects reach ordinary ticket buyers, concert-goers, sports fans, and their households. Even if the leak-site listing does not quantify records, the exposure of internal files often includes names, addresses, phone numbers, email addresses, and payment details that can be assembled into profiles. For families this means heightened risk of identity theft, targeted phishing, and unwanted solicitations tied to events you have attended or venues you frequent. The breach is especially relevant if you or your children have used any ASM Global-managed location for sports, concerts, conventions, or theater visits in recent years.

Doxxing and Identity-Chain Risks

Exfiltrated internal files frequently contain more than isolated records; they hold relational data that links names to ticket histories, loyalty accounts, email addresses, phone numbers, and sometimes even partial payment card information. Attackers and subsequent data resellers can chain these details with other breaches to build complete identity profiles. A single leaked email from an ASM Global system can be correlated with gaming usernames, social-media handles, or school-related accounts, turning a venue breach into a gateway for doxxing. Credential leaks of this nature routinely cascade into account takeovers on personal email, streaming services, and children’s gaming platforms that reuse the same passwords.

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.

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

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).

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 Alphv · 727 incidents tracked →

Severity High the filing does not enumerate what was exposed

Disclosed November 13, 2023

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

Alphv — 727 incidents tracked

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

Related breaches

high October 01, 2026