On August 18, 2015, an article in Russian Wikipedia about charas (Чарас (наркотическое вещество)) (in Russian) was blacklisted by Roskomnadzor as containing propaganda on narcotics. The article was then rewritten from scratch using UN materials and textbooks, but on August 24 it was included in the list of forbidden materials, sent to Internet providers of Russia. As Wikipedia uses HTTPS protocol to encrypt traffic, effectively all of the site with all language versions of Wikipedia was blocked in Russia on the night of August 25.[21]