ABC reports:
Palatine police are investigating a sexually explicit and obscene email sent Tuesday night to almost all of the 5,400 students at William Fremd High School and Palatine High School in Palatine, Ill.
The email was sent using the internal student email system.
Read more on ABC.
Fremd is in the largest HS district in Illinois, which uses Infinite Campus portal. Which recently was hacked. http://www.dailyherald.com/article/20141219/news/141218153/