Brinztech Alert: 2930 Resident Records of West Kotawaringin Leaked

Dark Web News Analysis

Cybersecurity intelligence from February 17, 2026, has identified a targeted data exposure event involving the residents of West Kotawaringin (Kotawaringin Barat). A threat actor operating under the alias Shadownex has published a database on a hacker forum, claiming it contains “2,930 complete population data” records.

The leaked dataset is highly dangerous as it contains “primary identity” markers for Indonesian citizens. The samples shared by the actor include:

• Primary Identifiers: Full names and NIK (National Identification Numbers).
• Family Metadata: Family Card numbers (Nomor KK).
• Geographic Data: Places of birth and specific village/district names.
• Political Message: The hacker included a message criticizing Indonesia’s cybersecurity posture and issues regarding corruption, suggesting a “hacktivist” motive behind the leak.

This incident follows a trend of regional data breaches in Indonesia where local administrative systems (SIAK) or public service portals are targeted to harvest PII for downstream criminal activities.

Key Cybersecurity Insights

The exposure of NIK and Family Card (KK) numbers simultaneously is a “Tier 1” threat to financial security and digital privacy:

• Illegal Online Loan (Pinjol) Registration: The combination of NIK and KK is the primary requirement for identity verification in most Indonesian digital financial services. Attackers can use this data to apply for loans in the victims’ names, often only discovered when debt collectors begin contacting the victims.
• Location-Based Social Engineering: Armed with the names of specific villages and places of birth, criminals can launch highly convincing Vishing (voice phishing) attacks. They may impersonate local officials or bank representatives, using specific details to build trust before requesting OTPs or banking credentials.
• Document Forgery and Synthetic Identities: This data can be weaponized to create forged physical or digital documents used for illegal SIM card registrations or opening “money mule” bank accounts to facilitate money laundering.
• Physical Security Risks: The exposure of exact village locations combined with full names can facilitate physical reconnaissance or targeted intimidation, especially when combined with data from other historical leaks.

Mitigation Strategies

To protect your digital identity and financial security, the following strategies are urgently recommended:

• Monitor Credit History: Regularly check your credit standing through services like iDebku (OJK) to ensure no unauthorized loans have been opened in your name.
• Vigilance Against Unsolicited Calls: Ignore calls or WhatsApp messages from parties claiming to be government officials asking for personal data. Official agencies never ask for OTPs or passwords via private messaging apps.
• Enforce Multi-Factor Authentication (MFA): Ensure all critical accounts are protected by app-based MFA (e.g., Google Authenticator) to prevent account takeovers even if your PII is known.
• Regional Infrastructure Audit: Local authorities in West Kotawaringin should immediately perform a forensic audit of their population servers and close any API vulnerabilities that may have been exploited to scrape this data.

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