high severity May 06, 2026 · 3 min read Unverified claim — what this is

MIMS Listed by The Gentlemen Ransomware Group

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

mims.com MIMS is a pharmaceutical prescribing reference guide first published in the United Kingdom in 1959 by Haymarket Media Group. The platform provides comprehensive drug information — including dosages, interactions, clinical guidelines, and prescribing data — for healthcare professionals across the globe. MIMS operates internationally across Asia, Australia, and beyond, with dedicated editions for countries including Malaysia, India, Indonesia, Japan, Singapore, and many others. Its mobile app and online database are used daily by doctors and pharmac
— from The Gentlemen’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.

MIMS Listed by The Gentlemen Ransomware Group

On April 27, 2026, pharmaceutical reference platform MIMS appeared on the leak site of the ransomware group known as thegentlemen, with the attackers claiming to have exfiltrated internal files during a ransomware incident.

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Reported Details of the Breach

Public reporting indicates that MIMS, the long-established provider of drug information used by healthcare professionals worldwide, was listed on the group’s public leak portal. The company, originally launched in the United Kingdom in 1959, supplies prescribing data, dosages, interactions, and clinical guidelines through both web and mobile platforms across Asia, Australia, and other regions. Available reporting describes the data involved as internal files, though the precise volume and specific categories of information remain unconfirmed by independent verification. No exact victim count has been disclosed, and the company has not yet issued a public statement detailing the scope of the exposure.

Why This Matters for You and Your Family

When a healthcare-adjacent service like MIMS is breached, the consequences reach far beyond doctors’ offices. Internal files can contain contact details, professional credentials, or partner information that link back to individual practitioners, clinic staff, or even patients indirectly referenced in operational records. If any member of your family sees a doctor who relies on MIMS, your own medical-adjacent data may already sit inside broader identity webs that criminals can exploit. A single leak of this nature can supply the missing piece that turns an otherwise minor data spill into targeted fraud, phishing, or worse. Ordinary families rarely realize how many everyday services quietly hold fragments of their lives until those fragments surface on a ransomware portal.

The Doxxing and Identity-Chain Risks

Ransomware operators rarely stop at one dataset. Once internal files leave a company’s control, they frequently feed into larger doxxing chains where usernames, email addresses, phone numbers, and partial personal records are cross-referenced across dozens of other breaches. A healthcare professional’s work email found in the MIMS files can be matched to personal accounts, children’s gaming profiles, or family addresses. This linkage turns isolated leaks into persistent exposure. Credential leaks like this one regularly cascade into account takeovers, especially for gaming accounts belonging to you or your children, where the same reused password or recovery details can hand over control to strangers.

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value redacted in this sampleage, relatives, address historySpokeo

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Report details & sourcing

Attributed to The Gentlemen · 1015 incidents tracked →

Severity High the filing does not enumerate what was exposed

Disclosed May 06, 2026

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

The Gentlemen — 1015 incidents tracked

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

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