(The Center Square) – Highline Public Schools is canceling school two days in a row after detecting a potential cyber attack, marking the third to a public entity in King County this year and the second in the last 15 days. The school district announced n a social media post on Sunday that all of its schools will close along with all activities and athletics. “We have detected unauthorized activity on our technology systems and have taken immediate action to isolate critical systems. We are working closely with third-party, state and federal partners to safely restore our systems,” the distric…