Classes at Vanderbilt University are proceeding as scheduled today, although access to most university systems remains restricted following a cyberattack claimed by ransomware group BYOD. Vanderbilt announced on Monday morning that it was dealing with "an active cybersecurity incident," and that the fallout may affect university devices, systems, and cloud-based services. The Nashville-based university initially told students and staff to shut down university devices and disconnect from campus Wi-Fi. It warned them to watch for unexpected prompts, altered files or permissions, unfamiliar applications, and unsolicited authentication requests. Campus computers reportedly began playing an audio threat attributed to BYOD. Student newspaper The Vanderbilt Hustler cited posts on campus social network Fizz showing the message. "You have been compromised by BYOD," the recording said. "We suggest you reach out to us as soon as possible. Instructions have been placed on your desktop. Failure to communicate will result in this estate being brought to the ground completely. Make the right choice or rot with the wrong one." By Monday evening, Vanderbilt had restored access to campus Wi-Fi, but warned that access to most systems remains restricted…