Illegal drug trade thrives on social media

Despite pressure from Congress and the Food and Drug Administration, and various efforts to try to crack down, tech companies still have a big problem with illicit pharmacies. BuzzFeed News documents just how easy it is to find drugs online — everything from Adderall to fentanyl.

How it works: The companies say they have tools in place to scan for illegal pharmacies, but those tools are easily thwarted. For example, Facebook’s main search feature filters out a lot of illegal pharmacies — but searching for photos and events turns up plenty of them.