One could end up thinking all Dead Sea Scrolls are fakes. They are not. The Dead Sea Scrolls are real, but some fragments, sold as originals for millions of dollars to rich collectors, are modern forgeries.
And bad fakes too. Dead Sea Scrolls are made of parchment; the fakes are from leather. Both come from animal skin but parchment is stretched and dried while leather is tanned: mixed with vegetable astringent compounds that cause the skin to contract and harden. The fakes, possibly made from "ancient Roman shoes" (!) were coated with animal glue, and written upon with modern ink that followed the creases and tears of the leather. (Obviously when someone writes on a new piece of parchment that later becomes cracked and torn, there would be no writing inside the cracks).
Now I'm no scholar and I gathered the above from various online articles, but it seems it the deception was pretty obvious, and in fact once someone started doubting all experts agreed and there was no controversy.
I find the world of forgeries fascinating because it speaks of the human mind, how our desire to make something real blocks our perception and any kind of critical thinking. I wish the article spoke of that more rather than the various talents and life history of Mr. Langlois.