CBSE re-evaluation portal hit by 1.5 million DoS attempts, stays online
Synopsis
CBSE's re-evaluation portal was hit by a 1.5-million-hit DoS wave and over one lakh unauthorised file-access attempts within minutes of going live on 2 June. The platform stayed up, 16,000 students filed by 3 pm, and Aadhaar-gated logins are now the new security baseline. The window stays open till 6 June.
Key Takeaways
CBSE 's re-evaluation portal went live at 7 am on 2 June and was immediately targeted by cyberattacks.
A DoS attack generated nearly 1.5 million hits in two minutes , with over one lakh unauthorised access attempts.
Over 16,000 students completed submissions by 3 pm despite the attacks.
The portal remains open until midnight on 6 June for verification and re-evaluation requests.
Aadhaar authentication is now mandatory for portal access to strengthen identity verification.
The Central Board of Secondary Education (CBSE) on Tuesday, 2 June, said its re-evaluation and verification portal was targeted by multiple cyberattack attempts within hours of going live, but confirmed that the platform remained fully operational. According to the board, a large-scale denial-of-service (DoS) assault generated nearly 1.5 million hits in just two minutes, alongside more than one lakh unauthorised file-access attempts.
Key Developments
The portal opened for applications at 7 am on 2 June. In a post on X, CBSE said malicious actors attempted to disrupt services even as thousands of students logged in to file requests. ‘While thousands of students accessed the CBSE re-evaluation portal, malicious actors attempted to disrupt services through a barrage of cyberattacks,' the board stated.
How the portal held up
Despite the intrusion attempts, more than 16,000 students had successfully completed their submissions by 3 pm, CBSE said. The board added that it had refined the platform based on earlier student feedback, including extending session time limits to make the workflow smoother. ‘Our teams remain vigilant and responsive to ensure our dearest students are facilitated in all ways possible,' the statement said.
Who is eligible and how to apply
Per the official CBSE notice, the window will remain open until midnight on 6 June. Eligible students can request verification of discrepancies in their scanned answer books and seek re-evaluation of specific answers if dissatisfied with the assessment. Only students who have already obtained scanned copies of their evaluated answer sheets can avail of the facility.
New security layer
As part of the revised process, students must log in through their CBSE website accounts and complete Aadhaar authentication before accessing the portal. The board said Aadhaar verification has been introduced specifically to strengthen identity checks and harden the system against impersonation, a step that takes on added weight given the scale of Tuesday's attack traffic.
What's next
CBSE has indicated that its cybersecurity teams will continue monitoring the portal through the application window. With applications open till 6 June, the board faces a stress test of whether layered security and Aadhaar gating can keep pace with sustained attack volumes during peak student traffic.
Point of View
Automated assault, not casual probing, and the targeting of answer-sheet files raises uncomfortable questions about who benefits from breaching an evaluation system. Aadhaar gating helps with identity, but it doesn't address the underlying infrastructure resilience question. The real test isn't Day 1; it's whether the portal holds through the 6 June deadline crush.
NationPress
21 Jul 2026
Frequently Asked Questions
What happened to the CBSE re-evaluation portal on 2 June?
The CBSE re-evaluation and verification portal faced multiple cyberattack attempts on its first day of operation, including a denial-of-service attack that generated nearly 1.5 million hits within two minutes and over one lakh unauthorised file-access attempts. Despite the attacks, the portal remained fully operational and over 16,000 students completed submissions by 3 pm.
Until when is the CBSE re-evaluation portal open?
The portal will remain open until midnight on 6 June. During this window, eligible students can apply for verification of discrepancies in their scanned answer books and seek re-evaluation of specific answers.
Who is eligible to use the CBSE re-evaluation facility?
Only students who have already obtained scanned copies of their evaluated answer sheets are eligible to apply for verification and re-evaluation. Applications must be filed through the student's CBSE website account.
Why is Aadhaar authentication required on the CBSE portal?
CBSE has introduced mandatory Aadhaar authentication to strengthen security and ensure proper identity verification before students can access the portal. The step is aimed at preventing impersonation and unauthorised access.
How did CBSE respond to the cyberattacks?
CBSE said its teams remained vigilant and kept the portal operational throughout the attack attempts. The board also refined the platform based on student feedback, including extending session time limits to improve user experience.
