![Largest ddos attack in history clogs internet and emphasizes the need to correct open dns resolvers [update] 1 image thumb231](https://www.geekslop.com/wp-content/uploads/2013/03/image_thumb231-300x225.png)
A 300 Gigabit per second denial of service attack has been crowned the biggest DDoS operation to date. For over a week, European spam-blocking service Spamhaus has been subjected to a brutal Denial of Service attack that has been so large, it has threatened to slow down the entire Internet infrastructure.