Central Board Of Secondary Education — Cyber Attacks, Breaches & Threat Activity

Related Threat Clusters

• Critical Vulnerabilities in CBSE's On-Screen Marking System Exposed

  Nisarga Adhikary, a 19-year-old ethical hacker, discovered severe vulnerabilities in the CBSE's On-Screen Marking (OSM) system, which is used for evaluating Class 12 board exams. The flaws include a hardcoded master…

  91 articles · Updated May 26, 2026
• Massive Data Breach Exposes CBSE Answer Sheets of 20 Lakh Students

  On May 31, 2026, Congress leader Jairam Ramesh reported that answer sheets of approximately 20 lakh (2 million) Class 12 students from the Central Board of Secondary Education (CBSE) were publicly accessible online,…

  6 articles · Updated May 31, 2026
• CBSE Portal Cyberattack Affects 50 Students' Payment System

  On May 30, 2026, the CBSE revaluation portal was compromised, allowing approximately 50 students to manipulate fee displays through a vulnerability in the HDFC payment gateway. Fees fluctuated dramatically from Re 1 to…

  6 articles · Updated May 30, 2026
• Nisarga Adhikary Joins IIT Kanpur After Exposing CBSE OSM Vulnerabilities

  Nisarga Adhikary, a 19-year-old cybersecurity researcher, has been appointed as an OSINT and Threat Intelligence Engineer at IIT Kanpur's C3iHub after revealing vulnerabilities in the CBSE's On-Screen Marking (OSM)…

  3 articles · Updated June 11, 2026

Recent Intelligence Reports

• IIT Kanpur hires Nisarga Adhikary after CBSE OSM flaw expose — Thequint · June 11, 2026
• CBSE OSM vulnerability finder Nisarga Adhikary hired by IIT Kanpur — Indiatoday.In · June 11, 2026
• Congress alleges massive CBSE answer sheet data breach — Madhyamamonline · May 31, 2026
• Cyber-attack on CBSE portal — Thehansindia · May 31, 2026
• CBSE revaluation portal targeted in cyber attack, 50 students access system — Madhyamamonline · May 30, 2026
• This 19-year-old says he could change CBSE marks from home — Newsbytesapp · May 27, 2026

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