The European Parliament's website was unavailable for several hours on Wednesday, 23 November, immediately following the controversial vote. 

The attack is what's known as a distributed denial-of-service (DDoS) attack, in which massive amounts of traffic are sent to servers in an attempt to block internet users from accessing websites, Marcel Kolaja, European Parliament member for the Czech Pirate party, confirmed. 

A pro-Russian group called KILLNET appears to have claimed responsibility for the attack in a Telegram post. 

The attack was considered a direct response...