Insider Threat Remains Strong

As in years past, the human factor remains a strong threat to a business' security. Insider threats are also "among the most difficult to detect," resulting in 49 percent of incidents taking months to discover and 21 percent taking years.

"We continue to see a very clear pattern of people being the weak link," Ostertag said.

The report recommended monitoring employees for unusual activity and restricting access to critical data and functions when not necessary.