The only trolls I know about are in 'Lord of The Rings'...but they were big creatures, and did not go on the internet much!
Bacon's 'Gnat's' is a much more appropriate term to use...pesky little blighters.
What is ransomware and how do I protect my PC from WannaCry?
What I learned from my mentor, Oscar-winning VFX supervisor Phil Tippett
Siri vs Google Assistant