high severity July 07, 2024 · 3 min read Unverified claim — what this is

Olympus Group Listed by Medusa Ransomware Group

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

Olympus Group (founded 1893) - provides services in the field custom printing and sewing industry, specializing in large format digital and dye-sublimation printing. Olympus Group corporate office is located in 9000 W Heather Ave, Milwaukee, Wisconsin, 53224, United States and has 254 employees. The total amount of data leakage is 436.9 GB
— from Medusa’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.

Olympus Group Listed by Medusa Ransomware Group

On July 7, 2024, the Medusa ransomware group added Olympus Group to its public leak site, claiming that the 131-year-old Milwaukee-based printing and sewing specialist had been hit by a ransomware attack and that attackers had exfiltrated 436.9 GB of internal files.

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Reported Details from the Listing

The Medusa leak-site entry states that Olympus Group, founded in 1893 and located at 9000 W Heather Ave, Milwaukee, Wisconsin, suffered a ransomware intrusion. It lists the volume of data taken as 436.9 GB but does not specify the exact file types or record counts. The disclosure indicates the company provides large-format digital and dye-sublimation printing services and employs 254 people. No ransom demand figure or payment deadline appears in the public listing, which is typical for Medusa’s initial publication phase before further extortion pressure is applied.

Why This Matters for You and Your Family

When a company like Olympus Group loses control of internal files, the information often includes customer records, vendor contracts, employee personal data, and operational spreadsheets. If your name, address, Social Security number, or payment details were ever shared with them for a custom printing order, uniform order, or business service, those details may now sit in an attacker-controlled archive. For ordinary families this means heightened risk of identity theft, targeted phishing, or fraudulent loan applications using data you assumed was safely stored by a long-established local business.

The Doxxing and Identity-Chain Risks

Exfiltrated internal files frequently contain spreadsheets that link employee names to home addresses, phone numbers, email accounts, and sometimes family member details. Attackers and subsequent data resellers can chain this information with usernames, children’s school records, or gaming handles found in the same dataset. The result is a doxxing chain that can expose your full household profile across social media, gaming platforms, and dark-web marketplaces. Credential leaks of this nature routinely cascade into account takeovers, especially for gaming accounts belonging to you or your children that reuse corporate-email passwords.

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Report details & sourcing

Attributed to Medusa · 515 incidents tracked →

Severity High the filing does not enumerate what was exposed

Disclosed July 07, 2024

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.

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Medusa — 515 incidents tracked

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