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high severity January 25, 2023 · 4 min read Unverified claim — what this is

Miescor Listed by nokoyawa Ransomware Group

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

Incorporated in December 1973 as a wholly owned subsidiary of Manila Electric Company (Meralco), the largest electric distribution utility firm in the Philippines, Meralco Industrial Engineering Services Corporation (MIESCOR) has chalked up an exemplary record of engineering performance backed by a...

— from Nokoyawa’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.
Miescor Listed by nokoyawa Ransomware Group

On January 25, 2023, engineering firm Miescor appeared on the leak site operated by the nokoyawa ransomware group. The listing states that internal files were exfiltrated during a ransomware attack on the Philippine company, a wholly owned subsidiary of Manila Electric Company. Anyone whose personal or employment records passed through Miescor’s systems may now be exposed, even though the exact number of affected individuals remains unknown.

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Details in the Leak-Site Listing

The nokoyawa leak page, still accessible via its onion address, states that internal files were exfiltrated after the company was hit by ransomware. The disclosure does not quantify the volume or types of data stolen, nor does it list specific record counts. It simply presents samples of the allegedly stolen material and gives Miescor a deadline to negotiate before further publication. Public mirrors of the listing, such as the one hosted on ransomware.live, preserve these claims exactly as posted by the attackers.

Why This Matters for You and Your Family

When a company that handles employee records, contractor agreements, project documentation, or customer contracts is breached, the ripple effects reach far beyond the corporate perimeter. If you or a family member ever worked at Miescor, received services from it, or had personal information stored in its engineering or administrative systems, that information could now sit in an attacker’s archive. Internal files often contain names, addresses, government identification numbers, payroll details, and correspondence that can be pieced together months or years later. For ordinary households this translates into heightened risk of identity theft, fraudulent loan applications, or targeted scams that use real employment history to sound credible.

The Doxxing and Identity-Chain Implications

Ransomware operators rarely stop at posting generic “internal files.” Once names, email addresses, or phone numbers surface, they become anchors for larger doxxing chains. An attacker can correlate an employee’s work email with personal accounts, link it to family members through shared addresses, and then locate children’s usernames on gaming platforms. These connections turn a single breach into a map of an entire household. Credential leaks of this kind frequently cascade into account takeovers on Steam, Roblox, Discord, and other services where kids reuse passwords or security questions derived from family data. The longer the exposed information circulates on dark-web forums, the more likely it is to fuel sustained harassment or financial fraud.

Nokoyawa’s Publicly Known Track Record

Public reporting attributes the first notable activity by nokoyawa to mid-2022. The group has since claimed responsibility for attacks on organizations across multiple countries, often targeting mid-sized firms in manufacturing, engineering, and technology sectors. Its typical playbook begins with initial access gained through compromised credentials or vulnerable remote-desktop services, followed by rapid exfiltration of documents before encryption is deployed. Nokoyawa then uses dual extortion: threatening both data publication and system restoration unless a ransom is paid. The group’s leak site functions as both a shaming platform and a negotiation tool, with countdown timers that pressure victims to respond before samples or full archives are released. While exact success rates are difficult to verify, the group’s persistence and willingness to publish stolen material align with patterns seen in other ransomware operations that prioritize speed and volume over prolonged negotiation.

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 shrink your exposure footprint.
  • Enable continuous DoxxScan monitoring across 13.1B+ breach records and 100+ platforms so the next time your information appears it is caught and acted on within hours rather than months.
  • Rotate any password you ever used at Miescor or related Meralco systems, replace it with a unique passphrase everywhere it was reused, and secure those accounts with an authenticator app instead of SMS codes.
  • Cover the household with DoxxScan family coverage that extends to dependents and children’s gaming accounts, because credential leaks like this one frequently chain into takeovers on Roblox, Steam, and Discord.
  • Let remediation specialists handle takedown requests across data brokers and underground forums so you do not have to chase every copy of your information yourself.

The Miescor listing is a reminder that even established engineering companies can become unwilling gateways to personal exposure. Acting quickly on the information that has already leaked, while shrinking your overall digital footprint, remains the most practical defense. DoxxScan by GalaxyWarden delivers 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. Start your DoxxScan trial today and close the gaps before the next wave of abuse begins.

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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Miescor 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 January 25, 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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