HighData breachMonitoring· updated Nov 10
Unauthorized access to MS&AD insurers' policyholder portal: Mitsui Sumitomo Insurance and Aioi Nissay Dowa leak about 480,000 customer records
MS&AD group insurers Mitsui Sumitomo Insurance and Aioi Nissay Dowa said on Nov 6 that unauthorized access to their policyholder portal was detected on the night of Nov 2, related services were halted late on Nov 3, and the investigation confirmed a data leak .