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high severity December 20, 2023 · 3 min read Unverified claim — what this is

The International School of Management Listed by 8base Ransomware Group

If you are a student of The International School of Management, here’s what is being claimed, and what it would mean for you.

The International School of Management (ISM) is one of the leading private business schools in Germany. ISM regularly ranks among the top universities in the relevant rankings.ism.de

— from 8base’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.
The International School of Management Listed by 8base Ransomware Group

On December 20, 2023, the International School of Management in Germany appeared on the leak site operated by the 8base ransomware group. The listing states that internal files were exfiltrated during a ransomware attack on the private business school. The disclosure does not specify the number of people affected or list exact data types beyond claiming that internal files were taken.

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Details from the 8base Listing

The 8base leak site entry for ISM states the school was targeted in a ransomware incident and that attackers successfully exfiltrated internal files. No sample data is publicly shown on the page, and the listing does not quantify records or name specific systems compromised. The disclosure indicates the data is now held by the group, with the usual implied threat of publication or sale if demands are not met. Public reporting on 8base shows they frequently use this format: a company profile, a brief statement of compromise, and a countdown timer that was active at the time of posting.

Why This Matters for You and Your Family

When a respected educational institution like ISM suffers a breach, anyone connected to it—current students, alumni, applicants, faculty, or administrative staff—may have personal information exposed. Internal files often contain names, addresses, dates of birth, contact details, academic records, and sometimes financial or employment information. Even if the exact volume is unknown, the exposure creates long-term risk for identity theft and fraud that can affect your family for years. Children or young adults listed in school databases are particularly vulnerable because early leaks can follow them into adulthood.

Doxxing and Identity-Chain Risks

Leaked internal files frequently link email addresses, usernames, phone numbers, and physical addresses. Attackers and opportunistic criminals then chain these pieces together with data from other breaches to build detailed profiles. A single credential from an ISM system can be tested across banking, government, and social media accounts. For families this means one parent’s alumni record can expose a child’s gaming username or school email, opening the door to account takeovers, harassment, or further doxxing. These identity chains grow quietly until fraud appears on credit reports or strangers contact you with personal details.

8base Ransomware Group Track Record

Public reporting attributes the emergence of 8base to mid-2022. The group quickly became known for targeting mid-sized organizations across multiple countries, with a focus on professional services, manufacturing, and education. Notable prior victims include logistics firms and technology providers, though exact lists fluctuate as new incidents appear. Their typical playbook involves initial access through compromised remote desktop credentials or vulnerable web applications, followed by exfiltration of internal documents before deploying ransomware. 8base then lists victims on their dark-web site and pressures payment through a mix of data-leak threats and occasional direct contact. They rarely encrypt systems publicly if files have already been removed, preferring extortion over full-system encryption in many cases.

What to do

  • Run a DoxxScan to map every link between your handles, emails, phone numbers, and real identity, then use the cleanup of Warden to remove what you can.
  • Enable continuous DoxxScan monitoring across 13.1B+ breach records and 100+ platforms so the next exposure surfaces in hours rather than months.
  • Rotate any password you used for ISM systems or related services and switch to 2FA through an authenticator app instead of text messages.
  • Cover the household with DoxxScan family coverage that extends to dependents and children’s gaming accounts that often chain back to the same address or parent email.
  • Let remediation specialists handle takedown requests across data brokers and leak sites for you while you focus on securing day-to-day accounts.

The incident shows how quickly educational data can move from institutional servers to criminal marketplaces. Taking concrete steps now limits how far the exposed information can travel. DoxxScan by GalaxyWarden provides continuous monitoring across 13.1 billion+ breach records and more than 100 platforms, AI-powered identity-chain mapping, hands-on remediation by specialists, and full household coverage that includes children’s gaming accounts—capabilities that directly counter the cascading risks created by leaks like this one.

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.

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The International School of Management is one listing. Your email is probably in others.
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Report details & sourcing

Severity High the filing does not enumerate what was exposed
Disclosed December 20, 2023
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.
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