The most notorious DDoS attacks - from Github to Mirai

John E Dunn
John E Dunn

John E Dunn

John is one of the cofounders of Techworld, having previously edited several technology titles including Network World, Network Week and LAN Magazine.

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Once considered more of a nuisance than a weapon, distributed denial of service (DDoS) attacks are now potent arsenals for causing disruption.

In February 2018, a record-breaking amplification attack was pointed at code repository GitHub, and in late 2016, Mirai crawled the internet for publicly insecure internet of things (IoT) devices to create a massive, and powerful, botnet.

DDoS attacks are often seen as a global phenomenon that affects ISPs and large datacentres. But the daily damage is done by much smaller attacks on vulnerable, sometimes poorly defended resources such as websites belonging to well-known organisations.

Read on for some of the most notorious DDoS attacks, big and small.

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