Brinztech Alert: Mojokerto Vendor Database is Leaked

Dark Web News Analysis

A threat actor on a known cybercrime forum is claiming to have leaked a database that they allege contains the information of vendors operating in Mojokerto, Indonesia. According to the post, the compromised data includes a range of sensitive Personally Identifiable Information (PII), such as vendor names, addresses, Gmail addresses, and phone numbers. Critically, the data also purportedly includes NPWP (Indonesian Taxpayer Identification Number) details.

This claim, if true, represents a significant data breach with the potential for severe financial harm to the affected businesses. The alleged inclusion of official NPWP tax numbers alongside contact and company information provides a powerful toolkit for criminals. This data can be used to commit identity theft, file fraudulent tax documents, and orchestrate highly convincing Business Email Compromise (BEC) and invoice fraud scams. The source of such a specific, localized database is likely a municipal government agency or a large B2B platform that serves the Mojokerto region.

Key Cybersecurity Insights

This alleged data breach presents a critical and targeted threat to the local business community:

• High Risk of Tax and Financial Fraud: The most severe risk is the exposure of NPWP numbers. This allows criminals to convincingly impersonate the vendors to tax authorities, financial institutions, or business partners, potentially leading to large-scale fraud, identity theft, or the filing of fraudulent tax returns.
• A Toolkit for Business Email Compromise (BEC): The database is a perfect resource for launching BEC attacks. With a list of legitimate vendors and their contact details, an attacker can impersonate one company to another within the same supply chain to trick them into diverting payments to a fraudulent account.
• Indication of a Localized Breach: The specific focus on vendors in Mojokerto suggests a breach at a local or regional level, possibly from a government business registration portal or a third-party service provider with a concentrated client base in the area.

Mitigation Strategies

In response to this claim, local authorities and businesses in the Mojokerto region must be on high alert:

• Launch an Immediate Investigation by Local Authorities: The Mojokerto government, with the assistance of Indonesian national cybersecurity agencies, must immediately launch an investigation to verify the claim and make every effort to identify the source of this potential data leak.
• Issue an Urgent Alert to the Local Business Community: An alert should be issued to all vendors and businesses in the Mojokerto area. Companies must be warned about the heightened risk of sophisticated BEC attacks and scams related to tax payments. All requests for payment changes must be rigorously verified through a secondary channel.
• Strengthen Security on Vendor and Government Portals: This incident should serve as a critical reminder for all businesses to secure their own systems. Furthermore, they should demand that any government or B2B portals they use enforce strong security, including Multi-Factor Authentication (MFA), to protect their data.

Secure Your Organization with Brinztech As a cybersecurity provider, we can protect your business from the threats discussed here. Contact us to learn more about our services.

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