Free online encyclopedia Wikipedia was not reachable following what it has described as a malicious attack The site was hit by a massive Distributed Denial of Service (DDoS) attack. The organization did not attribute the attack to a specific threat actor, we cannot exclude that it was a demonstrative attack to test the firepower of a DDoS botnet that is a available for rent. The attack is ongoing and our Site Reliability Engineering team is working hard to stop it and restore access to the site.”]
Source: https://securityaffairs.co/wordpress/90998/hacking/wikipedia-suffers-ddos-attack.html