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PKF Hadiwinata

Ransomware attack by Metaencryptor · Disclosed September 25, 2026 · 🇮🇩 Indonesia

pkfhadiwinata.com

Date Disclosed
Sep 25, 2026
2026
Threat Group
Metaencryptor
39 total victims
Country
🇮🇩 Indonesia
Industry
Professional Services

ThreatAI Analysis

Compiled from this incident record and the threat intelligence profile for Metaencryptor. Figures and technique mappings are quoted from the source data, not inferred.

PKF Hadiwinata was listed on Metaencryptor's dark web leak site as a victim on 25 September 2026, a top-10 accounting firm that provides audit and tax services to clients in Indonesia.

About PKF Hadiwinata

PKF Hadiwinata is a top-10 accounting and professional services firm in Indonesia, headquartered in the financial district of Jakarta. Founded in 1987, it is a member of PKF International and provides audit, tax, business solutions, and consulting services.

Source record: ransomware.live

About the Metaencryptor group

MetaEncryptor is a ransomware group first observed in mid-2023, targeting medium-to-large enterprises in legal, technology, logistics, manufacturing, and finance sectors primarily in the UK, Europe, and Southeast Asia, using AES-256/RSA-2048 encryption and double extortion. Metaencryptor has listed 42 victims since August 2023.

Incident Analysis

PKF Hadiwinata was targeted by Metaencryptor ransomware, one of the most active ransomware groups in our database with 39 confirmed victims globally. The attack was disclosed on September 25, 2026, when PKF Hadiwinata appeared on the group's dark web leak site.

PKF Hadiwinata is based in Indonesia , operating in the Professional Services sector. Indonesia ranks #26 globally for ransomware attacks, with 122 victims in our database.

Sector context: Organisations in this sector hold valuable data and operational systems that ransomware groups seek to exploit for financial gain through encryption and data exfiltration.

Metaencryptor typically employs a double extortion model: first exfiltrating sensitive data from the victim's systems, then deploying ransomware to encrypt files. Victims face two simultaneous threats — paying to restore access and paying to prevent publication of stolen data. The group's leak site publishes victim names and exfiltrated data as leverage.

Data source: This incident record is sourced from public ransomware group leak site disclosures aggregated via the ransomware.live API. Disclosure date reflects when the victim was published on the leak site, which may differ from the initial date of compromise. This platform does not publish or link to stolen data. Last data update: Sep 28, 2026 14:00 UTC.

Frequently Asked Questions

Was PKF Hadiwinata attacked by ransomware?

Yes. PKF Hadiwinata was listed as a victim of the Metaencryptor ransomware group on September 25, 2026. The organisation is based in Indonesia and operates in the Professional Services sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked PKF Hadiwinata?

PKF Hadiwinata was attacked by Metaencryptor ransomware. Metaencryptor is one of the most active ransomware groups, having claimed 39 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the PKF Hadiwinata ransomware attack occur?

The ransomware attack on PKF Hadiwinata was disclosed on September 25, 2026. This date reflects when the victim was published on the threat group's leak site, which may differ from the actual date of initial compromise.

What data was stolen in the PKF Hadiwinata ransomware attack?

The specific data stolen from PKF Hadiwinata has not been independently verified by this platform. Ransomware groups typically exfiltrate data before encrypting systems and use the threat of publication to pressure victims. As a Professional Services organisation, PKF Hadiwinata likely held sensitive business data, client information, and operational records.

How can organisations protect against Metaencryptor attacks?

To defend against Metaencryptor and similar threat actors, organisations should: maintain regular offline backups tested for restoration; implement network segmentation to limit lateral movement; deploy multi-factor authentication on all remote access; use endpoint detection and response (EDR) tools; conduct regular phishing and security awareness training; and monitor threat intelligence feeds for indicators of compromise (IOCs) associated with active groups.