Insider threats are behind the sharp increases over the past 18 months in the percentage of organizations that have experienced loss of company data. According to the Ponemon 
Institute, three out of every four organizations (76%) have been hit over the past two years—a significant increase from 67% in a 2014 study.
The findings show that the rise is due in large part to compromises in insider accounts—a phenomenon exacerbated by an increase in the proportion of employees who have unnecessary access to sensitive data. Respondents say insider negligence is more than twice as likely to cause the compromise of insider accounts as any other culprits