The 2015 Human Factor Report revealed that last year,cyberattackers “went corporate” by focusing on businesses ratherthan consumers, exploiting middle managers' overload of informationsharing, and trading off attack volume for sophistication.

Proofpoint, Inc., a security and compliance company inSunnyvale, Calif., released the results of its second annual reportdetailing cybercriminals' shifting social engineering tactics to corporate targets. The Proofpointfindings emphasize how human behavior, not simply system orsoftware vulnerabilities, significantly impacts enterprisesecurity, and details what defenses are necessary in a world whereeveryone clicks.

On select days in 2014, Proofpoint saw a 1,000% increase inmessages with malicious attachments over the usual volume. The mostpopular email lures in 2014 included e-fax and voicemailnotifications, and corporate and personal financial alerts.