Schools in Baltimore County, Maryland, are closed for a second day after a ransomware attack shut down much of the school district’s computer network. Authorities have revealed few details on what was compromised or if the attacker made any demands. This comes as The New York Times reveals hospitals and other medical institutions are coming under an increasing wave of cyberattacks. A recent attack on the University of Vermont Health Network took down the electronic medical record system for nearly a month, disrupting care for chemotherapy patients and others.