Kawasaki City: ransomware hit the school server of Tachibana High School for the second time in half a year

1. 2020-04-22

   A staff member found an English ransom note on the server, and its files were encrypted. [2]

2. 2020-05-01

   The city disclosed the incident. [1]

The server held teachers' records of where students were going after graduation. The cause of the infection is unknown. No effect on the city's administrative systems or other schools was found. [2]

The school had been hit by a different ransomware in October 2019, which damaged students' work, and had strengthened its defenses afterwards. [2]