From: San Francisco Chronicle

Number of the day

$10 billion

That’s how much businesses spend every year across the globe to fight cyber-crimes with firewalls, detection systems and software maintenance.  Cyber-attacks on U.S. computer networks rose 17-fold from 2009 to 2011, according to data cited by Gen. Keith Alexander, head of the National  Security Agency and U.S. Cyber Command, at a July conference.