India, June 5 -- The Central Board of Secondary Education's (CBSE) re-evaluation portal was targeted by a large-scale cyberattack involving nearly 3.8 million malicious packets on June 3 in an attempt to disrupt the ongoing verification and re-evaluation process, a board official has said.

Within minutes of becoming operational on June 2, the portal blocked over 100,000 unauthorised access attempts, an official said. Several coordinated high-volume traffic bursts resembling Distributed Denial-of-Service (DDoS) attacks were mitigated by the security systems.

"The traffic profile showed coordinated request surges consistent with DDoS-type attack patterns. However, the security architecture deployed on the platform successfully mitigated t...