Concord, CA…On 4/25/18, The Concord Police Department was notified by the Mount Diablo School District in regards to a potential network intrusion on their system. Investigation into the incident revealed one teacher clicked on a “phishing” email and provided her credentials to an unknown hacker in the process. The hacker then used the teacher’s credentials to log into a school system to change the grades of numerous students.

Further investigation showed the hacker appeared to have only changed the grades of students and it appeared no personally identifiable information was stolen. An arrest was made on 5/9/18 with the assistance of the US Secret Service, Contra Costa District Attorney’s Office, and the Contra Costa County Sheriff. The name of the arrestee is not being released because he is a juvenile.

For those who don’t know “Dug” yet (pictured below), Dug is a trained Electronic Detection K9 with the Contra Costa County Sheriff’s Office. Dug is trained to locate hidden electronic devices and he located an SD card hidden in a tissue box that a normal person might not have checked. We wanted to thank Dug for assisting us!