Secure communications are one of the most important topics in information security, and the Transport Layer Security (TLS) protocol is currently the most used protocol to provide secure communications on the internet. For example, when you are connecting to your online banking application, your favorite instant message application or social networks, all those communications are being transmitted using TLS. With TLS, the information sent by the browser and the service is secured and encrypted, meaning that the information cannot be modified or tampered with by an attacker. The communications are also verified to ensure that the browser is connected to the right endpoint (e.g. Wikipedia).
This week at Black Hat and DEF CON, Cisco security consultants Alfonso Garcia Alguacil and Alejo Murillo Moya will deliver a presentation, called “Playback: A TLS 1.3 Story,” about some of the known security implications of using 0-RTT and will show proof of concepts of some attacks that have been seen in real-world environments. The intent is to raise awareness across the security community about that new feature. The presentation will be presented at Black Hat USA 18 and DEF CON 26. Attendees will learn about TLS 1.3 0-RTT, see some examples about how an attacker could take advantage of that new feature and get an understanding of the security implications of enabling the feature and how it could be used safely minimizing any potential security impacts.
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