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Global cyber-security tab hits $10 billion

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.

Re-posted from San Francisco Chronicle.