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Andrea Mitchell Reports
Latest data breach raises security alarms
NBC News’ Pete Williams reports on a massive breach of more than a billion passwords from hundreds of thousands of websites, and could be considered the biggest data breach ever.
The FBI urges you to reset your WiFi router right now01:19
Cambridge Analytica whistleblower: Facebook knew of data grab since 201500:43
Facebook stock value falls amid growing backlash01:38
DHS cybersecurity head: 'No doubt' Russians penetrated voter registration systems03:07
DHS cybersecurity head: 'No doubt' Russians penetrated voter registration systems00:27
Big data's potential to discriminate09:40