What is a DDoS Attack?

A Distributed Denial of Service (DDoS) attack is an attempt to make an online service unavailable by overwhelming it with traffic from multiple sources. They target a wide variety of important resources, from banks to news websites, and present a major challenge to making sure people can publish and access important information.

What happens during a ddos attack?

The Digital Attack Map displays global DDoS activity on any given day. Attacks are displayed as dotted lines, scaled to size, and placed according to the source and destination countries of the attack traffic when known. Some features include:


  • Use the histogram at the bottom of the map to explore historical data.
  • Select a country to view DDoS activity to or from that country.
  • Use the color option to view attacks by class, duration, or source/destination port.
  • Use the news section to find online reports of attack activity from a specified time.
  • View the gallery to explore some examples of days with notable DDoS attacks.
Attackers build networks of infected computers, known as 'botnets', by spreading malicious software through emails, websites and social media. Once infected, these machines can be controlled remotely, without their owners' knowledge, and used like an army to launch an attack against any target. Some botnets are millions of machines strong.

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