Jayati Ramakrishnan reports: A Portland-area school district has canceled Tuesday and Wednesday classes as staffers work to hole a ransomware round that may experience affected the districts technology systems. Centennial schooling District�staff discovered Monday that certain digital files had been encrypted by an unknown actor, the district said in a statement. The district took its technology systems offline as a precaution so hackers could not access any more information. Read more on The Oregonian. The district’s web site was unreachable at the time of this publication.