The cloud can be used to store your files and photos, but criminals use it to trade in child pornography, illegal guns and drugs.
Several Purdue University professors and a grad student have developed technology to automatically detect illegal activity on the cloud.
The machines that scan uploaded images and videos learn what illegal activity looks like.
It then alerts the provider and law enforcement. Tests on 1,500 images and videos showed the detection technology got it right 96 percent of the time.
