After a breach compromised "a small amount" of Social Security numbers, the university is setting up a call center as it notifies victims.

"I think we can probably expect to see more" universities to see data stolen by malicious actors, Stanford student and cybersecurity researcher Jack Cable said.

The University of California system is among a growing list of educational institutions affected by the compromise of a file-sharing application.

The ransomware attacks appear to be fallout of the breach of Accellion's file-transfer application, which both universities have used.