The Defense Information Systems Agency says a recent hack attack shows the security benefits of cloud computing. DISA last year started hosting Army e-mail. When the DISA cloud was hit with e-mail bringing in malware, cyber officials quickly squashed it.

Mark Ordnorff, DISA's top IT security official, says, under the old setup, the malware could have hit many individual servers undetected. DISA's view was backed up by General Keith Alexander, commander of U.S. Cyber Command. He said they way they're set up now, most DoD networks are not defensible.

This story is part of Federal News Radio's daily Cybersecurity Update. For more cybersecurity news, click here.