(Fox News) Cyber attacks that hit 74 countries across Europe and Asia Friday, impacting the public health system in Britain, apparently involved a leaked hacking tool from the National Security Agency. The attack used ransomware, which is malware that encrypts data and locks a user from their data until they pay a ransom. The tool, which was leaked by a group known as Shadow Brokers, had been stolen from the N.S.A. as part of a wide swath of tools illegally released in 2016. Shawn Tuma, an Attorney and cyber-security expert joined Lars to talk about what you can do to protect yourself.