FTSE 100 Vulnerability Warning: Over 70% Have Single DNS Provider

Over 70 percent of the FTSE 100’s constituent companies rely on a single DNS nameserver, or provider, potentially exposing them to significant risk from a future DDoS attack like the one that crippled DNS provider Dyn in 2016, a new report by network intelligence specialists ThousandEyes warns. The huge attack on Dyn in October 2016 took companies from GitHub to Netflix, via Paypal and Starbucks, offline for hours after approximately 100,000 malicious endpoints launched high-volume floods of TCP and UDP packets, both with destination port 53, at the company’s infrastructure.

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