Unimedia: its hometown-tax support site "Furusato Premium" was hit by a password list attack

An anomaly on the admin screen revealed a huge number of password list attacks. The same day it added a blocking mechanism and force-reset passwords.

Disclosed

2022-03-02

Organizations involved

Leaked or at risk

Unknown

Downtime

Unknown

What happened

2022-02-17
At 1 pm it noticed an anomaly on the admin screen of "Furusato Premium" and found disk usage had reached 100%. Investigating the cause, it found it may have been hit by a huge number of password list attacks. The same day it introduced a mechanism to block the attacks and forced a password reset. [1]
2022-03-02
It published the investigation result. [1]