80% of efforts by companies to protect confidential data are spent in the form of technological protection from external threats: while 80% of attacks, presenting a serious threat to the business, were performed from within.
US Secret Service // Insider Threat Study

87% of incidents are the fault of non-technical personnel - people who do not have specific computer skills. Only in 9% of the cases, those responsible for the incident were IT specialists.
CSI/FBI // Computer Crime Report