Survey: Half of U.S. institutions allowed sensitive documents to be sent to them in unencrypted emails. A quarter of the schools actually encouraged such transmissions, the survey says. Security at larger universities tends to be better than at smaller schools and community colleges, security expert says. “Email encryption is overkill,” says one cloud security expert Marc Gaffan of Incapsula, who says encryption is “overkill” The real problem is what happens to that email when it hits the university, he says.”]