As companies fall victim to increased insider threats, one of the greatest casualties has become trust in coworkers. Where one used to think primarily about threats to network security as coming from external intruders, today CISOs need to contend with the increasing likelihood that the threat actor might be a colleague — perhaps someone close to the IT staff, a disgruntled executive or other employees, a contractor or maybe just someone trying to do their job. Sometimes the threat actors are not even aware that they are doing anything wrong.

In light of recent, high-profile breaches, it might well be getting easier to convince the C-Suite to take threats from within more seriously. In 2018, insider threats have become one of the most pressing worries at a time when executive management across many industries is finally realizing the potential enormity of security breaches. That awareness, though, comes at the cost of attacks that are only increasing in scale and complexity. Securing against insider threat is a process that requires immediate attention. That said, companies are still trying to sort out what is a real threat and what is just an employee doing their work.

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