In the 20 years since the first Black Hat conference in 1997, security hacks have become incredibly cheap to initiate, increasingly expensive and complex to mitigate, and have more real-world consequences than ever before, according to speakers and attendees at this year’s conference. The first day of sessions at the conference, which runs until Thursday at the Mandalay Bay in Las Vegas, not only touched on new technology but also the human element of security.

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