high severity March 09, 2026 · 4 min read Unverified claim — what this is

Serviceplan Group (Korea branch) Listed by qilin Ransomware Group

If you are a customer of Serviceplan Group (Korea branch), here’s what is being claimed, and what it would mean for you.

Serviceplan Group (Korea branch) 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.

Serviceplan Group (Korea branch) Listed by qilin Ransomware Group

On March 9, 2026, the Korea branch of Serviceplan Group appeared on the leak site operated by the qilin ransomware group. The attackers claim to have exfiltrated internal files from the advertising and communications company, adding the victim to their public list of organizations that have not met their demands.

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Reported Details from Reporting

Public reporting indicates that Serviceplan Group’s Korean operations were listed on the qilin leak portal with an announcement that internal data had been stolen. The exact number of people whose information is contained in the files remains unknown. Available reporting describes the exposed material as internal files, though the full scope of what was taken has not been independently verified. The listing appeared on the group’s onion site, which is routinely tracked by ransomware-monitoring platforms such as ransomware.live.

March 9, 2026 marks the public disclosure date. No confirmed timeline has been published for when the initial breach occurred or how long the attackers had access before exfiltration.

Why This Matters for You and Your Family

When an advertising agency’s internal documents are stolen, the information inside often includes employee records, client contracts, vendor lists, and correspondence that can contain personal details. If you or anyone in your family has ever worked with Serviceplan Group, used one of their client brands, or had your information shared with them as part of a campaign or promotion, your data may now sit in an attacker’s archive.

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Report details & sourcing

Attributed to Qilin · 2200 incidents tracked →

Severity High the filing does not enumerate what was exposed

Disclosed March 09, 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.

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Qilin — 2200 incidents tracked

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