Wikipedia and World of Warcraft Classic users reported global outages over the weekend in targeted and connected DDoS attacks. Wikipedia was first impacted on Friday evening for millions of users, who reported issues in Europe, the U.S. and parts of the Middle East. Blizzard Entertainment, an American video game developer that makes the games, was also affected by the DDoS attack. As of Monday morning the website was back up and running, with some help from web infrastructure security company Cloudflare.
Source: https://threatpost.com/wikipedia-world-of-warcraft-ddos-attacks/148121/