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Add Dyn DDoS attack link (#13)
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@ -541,7 +541,7 @@ Services such as [CloudFlare](https://www.cloudflare.com/dns/) and [Route 53](ht
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* Accessing a DNS server introduces a slight delay, although mitigated by caching described above.
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* DNS server management could be complex, although they are generally managed by [governments, ISPs, and large companies](http://superuser.com/questions/472695/who-controls-the-dns-servers/472729).
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* DNS services have recently come under DDoS attack, preventing users from accessing websites such as Twitter without knowing Twitter's IP address(es).
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* DNS services have recently come under [DDoS attack](http://dyn.com/blog/dyn-analysis-summary-of-friday-october-21-attack/), preventing users from accessing websites such as Twitter without knowing Twitter's IP address(es).
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### Source(s) and further reading
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