WASHINGTON, Reuters Internet companies Google, Amazon and Cloudflare say they have weathered the internet39;s largestknown denial of service attack and are sounding the alarm over a new technique they warn could easily cause widespread disruption.

Alphabet Incowned Google said in a blog post published Tuesday that its cloud services had parried an avalanche of rogue traffic more than seven times the size of the previous recordbreaking attack thwarted last year.

Internet protection company Cloudflare Inc said the attack was three times larger than any previous attack we39;ve observed. Amazon.com Inc39;s web services division also confirmed being hit by a new type of distributed denial of service DDoS event.

All three said the attack began in late August; Google said it was ongoing.

Denial of service is among the web39;s most basic form of attack and it works by simply overwhelming targeted servers with a firehose of bogus requests for data, making it impossible for legitimate web traffic to get through.

As the online world has developed, so too has the power of denial of service operations, some of which can generate millions of bogus requests per second. The recent attacks measured by Google, Cloudflare and Amazon were capable of generating hundreds of millions of request per second.

Google said in its blog post that only two minutes of one such attack generated more requests than the total number of article views reported by Wikipedia during the entire month of…