Possible cyberattack shut down Norfolk schools

… “unusual activity” Friday, district officials took their networks offline as a precaution, the chief information and instructional technology officer said.

At least three other Virginia school systems including its largest, Fairfax County, have been the victim of ransomware attacks this school year, where hackers infect an organization’s computer systems with a virus that blocks access to files and data unless a ransom is paid. In Fairfax, student disciplinary information and employee insurance information was posted online by the hackers, The Washington Post reported last month.