Brinztech Alert: The Alleged Database of SMKN 1 Luragung PKL is Leaked

Dark Web News Analysis

The dark web news reports a confirmed data breach involving SMKN 1 Luragung, a vocational high school in Indonesia. A threat actor has leaked a database specifically linked to the school’s Field Work Practice (PKL) subdomain (pkl.smkn1luragung.sch.id).

The leaked dataset, distributed in JSON format, contains approximately 637 records. The data is divided into two distinct categories: Teachers (32 records exposing Names, NIPs, Emails, and Personal WhatsApp Numbers) and Students (605 records exposing Names, Student IDs/NIS, Classes, and Departments). While the volume is smaller than corporate leaks, the specificity of the contact data makes it highly actionable for local scammers.

Key Cybersecurity Insights

Breaches in the educational sector, particularly those involving high schools, carry unique risks due to the demographic of the victims (minors) and the trust placed in school communications:

• WhatsApp Social Engineering: The exposure of Teacher WhatsApp Numbers is the most critical immediate threat. Attackers can impersonate school administrators or government education officials to demand “urgent fees” or send malicious links to teachers. Conversely, if student phone numbers were involved (or if teachers are used as a conduit), attackers could target students with “Scholarship Scam” messages.
• Identity Risks for Minors: The leak includes NIS (Student ID Numbers) and full names. While not as critical as a KTP, this data builds a digital footprint for minors that can be exploited for future identity theft or to bypass verification in educational apps.
• Targeted “Parent” Phishing: With access to student class and department data, fraudsters can contact parents claiming to be a teacher (using the leaked teacher names) to report a fake “emergency” or “unpaid tuition fee,” leveraging the accurate class details to establish credibility.
• Infrastructure Vulnerability: The breach of the “PKL” (Field Work) subdomain suggests that auxiliary systems—often built by students or third-party vendors—lack the rigorous security controls of the main school network, serving as a soft entry point for attackers.

Mitigation Strategies

To protect the school community and data privacy, the following strategies are recommended:

• Official Communication: The school administration should officially notify parents and students via offline channels (circular letters) to disregard any unsolicited WhatsApp messages asking for money, even if they appear to come from known teachers.
• Number Privacy: Teachers affected by the leak should be advised to adjust their WhatsApp privacy settings (e.g., hiding profile photos/status from unknown numbers) to reduce the effectiveness of social engineering.
• Subdomain Audit: The IT department must immediately take the vulnerable PKL subdomain offline to patch the SQL injection or configuration error that allowed the JSON export.
• Password Hygiene: Students and teachers should change their passwords for any school-related accounts, ensuring they are not reusing these credentials on social media.

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