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Jakarta Nanyang School

tengu

This record tracks a ransomware attack claimed by the tengu group against Jakarta Nanyang School. It collects the publicly disclosed attack details — sector, location and timeline — as published on the operator's leak site and indexed by Breach House.

Window Zero

EXPOSURE GAP

Window Zero is the time the breach stayed in the open before anyone said so — the gap between when the attack was first discovered on the operator's leak site (t1) and when it was publicly disclosed (t2). The wider this window, the longer victims, staff and customers were exposed with no warning.

218days open
t1 · Published t2 · Pending
Jan 26, 2026Not disclosed yet
Country
Indonesia
Business Category
Education
Employees
101-1000
Discovered
2026-01-26
Published
January 26, 2026
Disclosed / Notified
Not disclosed yet
Victim ID
Xh2ujf7VwQvx

Attack Summary

Jakarta Nanyang School (JNY) is a co-educational institution catering to students aged 3 to 18, offering a global and progressive educational approach. Established in 2012 in Bumi Serpong Damai, JNY focuses on the holistic development of students, enhancing their academic, moral, physical, social, and emotional growth. The school provides a nurturing environment and a variety of programs including Kindergarten, Primary, Secondary, and Junior College. JNY aims to serve families seeking a comprehensive and innovative educational experience for their children

Leak Screenshots

SAMPLE

Proof-of-breach screenshots the operator posted from the stolen data. Previews are redacted and locked — the originals are available on HaveIBeenRansom.

file_tree.png
finance_2024.xlsx
passport_scan.jpg
contract_signed.pdf
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Dark Web Exposure

Findings for jny.sch.id — indexed by HaveIBeenRansom.
42
found in Infostealer logs
79+
found in Traditional breaches
0+
found in Ransomware leaks
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+ 16 more leak sources locked
Leak volumes are locked
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Visit Website Original Post View Group: tengu

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