DDoS attacks grew at CAGR of 68% over past five years, says Arbor Networks


Here’s news we already suspected: DDoS attacks are getting larger and becoming more frequent and complex with it, according to a report released by Arbor Networks. 

The company, the security division of application and performance management firm NetScout, has released its 12th annual worldwide infrastructure security report, and of the 356 respondents, from a mix of service providers, hosting, mobile, enterprise, and network operators, the threat landscape has been transformed by the emergence of Internet of Things (IoT) botnets.

The increased scale and complexity of DDoS attacks has led more businesses to deploy purpose-built DDoS protection solutions, implement best practice hybrid defences and increase time for incident response practice – all positive developments in an otherwise gloomy threat environment. The findings showed that 53% of service providers indicated they are seeing more than 21 attacks per month – up from 44% in 2016; 21% of data-centre respondents saw more than 50 attacks per month, versus only 8% 2016; and 45% of enterprise, government and education respondents experienced more than 10 attacks per month – a 17% year over year increase.

The report is an in-depth analysis covering how attackers exploit and recruit IoT devices, how IoT botnets enabled by Mirai source code operate and offers practical advice on how to defend against them. In 2017, the largest distributed denial-of-service (DDoS) attack reported was 800 Gbps. This is a 60% increase over 2015’s largest attack of 500 Gbps. Since Arbor began the WISR in 2005, DDoS attack size has grown 7,900%, for a compound annual growth rate (CAGR) of 44%. In the past five years alone, DDoS attack size has grown 1,233%, for a CAGR of 68%.

“IoT botnets are a game changer because of the numbers involved,” said Darren Anstee, Arbor Networks chief security technologist in a statement. “There are billions of these devices deployed and they are being easily weaponised to launch massive attacks. Increasing concern over the threat environment is reflected in the survey results, which show significant improvements in the deployment of best practice technologies and response processes.”

You can find the full report here (registration required).


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