According to a report Wednesday by the BBC, internet speeds around the world have been noticeably slowed by a massive "distributed denial of service" attack.
These distributed denial of service (DDoS) attacks overload targeted web servers with extra traffic that so people who are trying to reach a site for legitimate purposes might be unable to do so.
The BBC says that some security experts have called this "the biggest cyber-attack in history."
According to the BBC, the cyber attacks were focused on a company called Spamhaus, which is a non-profit group in London and Geneva, whose goal is to help email providers filter out spam and other unwanted content.
The BBC quotes a message from Sven Olaf Kamphuis, who claims to be a spokesman for Cyberbunker, indicating that Spamhaus was abusing its position, and should not be allowed to decide "what goes and does not go on the internet".
With Spamhaus' services compromised, large portions of the web became less stable according to the BBC.