DNS, CDNs and CAs represent Achilles' Heel for top websites

guest · Jun 25, 2018

DNS, CDNs and CAs represent Achilles' Heel for top websites
Third-party services can crash 73% of online properties
June 25, 2018
https://www.theregister.co.uk/2018/06/25/webs_achilles_heel/

In a paper distributed last week through the ArXiv preprint server, researchers for Carnegie Mellon University find that third-party services such as domain name service (DNS) providers, content delivery networks (CDNs) and certificate authorities (CAs) represent an attractive target for attackers looking to maximize the impact of their hacking.

In addition, indirect or transient dependencies expand the possible points of failure: Critical third-party services can depend on other services and when one service is out it can have a downstream effect.

Based on their findings, the researchers advise not only should organizations do the obvious thing and add some service redundancy but they should also analyze third-party service dependencies as avenues of vulnerability.
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Paper: https://arxiv.org/pdf/1806.08420.pdf

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