high severity June 02, 2025 · 3 min read Unverified claim — what this is

sky Listed by Qilin Ransomware Group

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

Established in 1987, Sky-mac is specialised in Air-Conditioning and Mechanical Ventilation (ACMV), HVAC system, related services, which encompasses the designing, installation, service, maintenance and repair of ACMV systems. Sky-mac has o ...
— 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.

On June 2, 2025, Singapore-based HVAC contractor Sky-mac appeared on the leak site of the qilin ransomware group, with attackers claiming to have exfiltrated internal company files following a ransomware incident.

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What Public Reporting Shows

Public reporting indicates the company, formally known as Sky-mac Pte Ltd and established in 1987, specialises in air-conditioning, mechanical ventilation, HVAC system design, installation, servicing, maintenance and repair. The qilin leak portal lists the incident and has begun publishing samples of the stolen data. Available reporting describes the exposed material as internal files, though the precise volume and full list of record types remain unconfirmed by the company at the time of writing. No customer count or specific personal data categories have been publicly detailed by Sky-mac or the attackers.

Why This Matters for You and Your Family

When a local service provider like an HVAC contractor suffers a breach, the information stolen can easily include names, addresses, phone numbers, email accounts, contract details and payment records tied to residential customers. These records often sit in the same spreadsheets or folders used to schedule maintenance visits to family homes. Once published on a ransomware leak site, the data becomes permanently available to identity thieves, scammers and stalkers who search leak repositories for fresh leads. For ordinary households this translates into higher risks of phishing campaigns, fraudulent service calls, or the sale of your contact details on underground forums.

The Doxxing and Identity-Chain Risk

Ransomware leaks rarely stop at one company. A single exposed email or phone number can be cross-referenced with your children’s gaming usernames, social-media handles or school-related accounts. Attackers chain these fragments together to build a complete profile that reveals home addresses, family relationships and daily routines. Credential leaks of this nature frequently cascade into account takeovers on gaming platforms, email and cloud storage, turning a corporate breach into sustained personal harassment or financial fraud. Public reporting on similar incidents shows that families often discover the downstream abuse months later, long after the original data has spread.

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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 Qilin · 2351 incidents tracked →

Severity High the filing does not enumerate what was exposed

Disclosed June 02, 2025

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

Qilin — 2351 incidents tracked

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

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