The darknet does not enjoy the best of reputations, for many different and valid reasons. The biggest problem is how this particular part of the internet is home to a lot of illegal activity, including drug and weapon sales, as well as the sale of a lot of other types of information which is considered illegal. One recent story confirms how an Anti-Islamic terrorist managed to obtain a bomb from the darknet.
It is no secret people with criminal intentions can buy just about anything they need from the darknet. Although a lot of focus lies on exploring opportunities in terms of drugs and stolen data, one should not overlook the weapon trade either. Various marketplaces specialize in buying and selling weapons, which range from handguns to full-fledged bombs.