The Defense Information Systems Agency asked technology companies on Wednesday for ideas on how to build an email defense system on the perimeter of its networks that can scan 50 million inbound messages a day to catch spam, viruses and cyberattacks.

In a notice to industry, DISA said it needs to protect 700 unclassified network domains and that, while there are many individual e-mail domains administered by Defense Department units, "there is a possibility these may be combined into one enterprise DoD e-mail domain."… NSA Director Lt. Gen. Keith B. Alexander said 65-70% of the emails sent each day are spam.

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Related topics: Cyberattack, Email, Malware, Security, Spam