The U.S. officially says the tools and infrastructure used in the attack were similar to previous activity from North Korea.
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The country says accusations that it was to blame are nothing but 'wild rumor.'
North Korea has reportedly poured resources into a sophisticated cyber-warfare cell called Bureau 121.
The security breach brings to light some of the worst password-protecting practices.
The alert comes after a devastating breach last week at Sony Pictures Entertainment.
While business owners always have to expect the unexpected, here are four things you can do to prepare your business technology for the holiday season.
The operation is said to have compromised sensitive data about dozens of publicly held companies.
The reality each year on Cyber Monday is that billions are spent online during office hours. You're wise to watch for bandwidth traffic jams and security threats.
The majority of consumers are concerned about safety when they purchase online, according to a recent study.
Symantec says an advanced malicious software application has been uncovered that was used to spy on private companies, governments, research institutes and individuals.
The vulnerability could allow attackers to remotely execute code and take over a user's computer by tricking them into visiting a bad URL.
Cybersecurity researchers say the bug enables hackers to access their devices by persuading users to install malicious applications.
Security researchers have uncovered a sophisticated campaign that targets executives once they sign on to computers using in-room wireless connections.
That's in addition to customer data for 56 million payment cards previously disclosed by the retailer.
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