Minneapolis Public Schools students and staff returned to school buildings this week only to find that ongoing issues from a cyberattack on the district were continuing to cause disruption.
The district said the system for recording attendance and grades was up and running Tuesday, but Greta Callahan, teacher chapter president of the Minneapolis Federation of Teachers, said some teachers were still having trouble logging in to the programs. After-school activities were canceled Monday because of the ongoing issues.
District officials have sent families a few email updates about the "technical difficulties" from an "encryption event" but have yet to explain what caused it. The problems so far have left some of the district's systems down for about a week.
While the description of "encryption event" is vague, it could mean a ransomware attack, said Matthew Wolfe, director of cybersecurity operations at Impero Software, a company whose products include education software.
Such attacks on school districts have been on the rise in recent years and the rapid shift to distance learning at the start of the pandemic likely made districts easier targets, Wolfe said.
"With more devices, there are more areas to be impacted," he said, adding that amid the push to make e-learning accessible for all students at home, "protection often got put on the back burner."
Several such attacks have made headlines in recent months: Schools in Des Moines were forced to cancel classes in January after a cyberattack. And the country's second-largest school district — Los Angeles Unified — fell victim to a ransomware attack claimed by the hacking group known as Vice Society. After that incident, about 2,000 student psychological examinations were uploaded to the dark web.
The Minneapolis district had not provided any new information about the cause of the incident by the end of the school day Tuesday. The school board was set to hear a security briefing related to IT issues at a closed meeting Tuesday night.