The biggest threat to Ruby

It is Serbia. When they finally decide to take back the .rs cTLD, by legislature or by armed force, 50% of the Ruby websites will be seized.
Imagine trying to download a TOML parser for your toy project but instead you end up on a page detailing how to shoot Kosovans.

Reply: escher me We have located your ip address, fear not! The Kosovans are safe.