The Transport Layer Security (TLS) protocol is currently the most used protocol to provide secure communications on the internet. With TLS, the information sent by the browser and the service is secured and encrypted. This week at Black Hat and DEF CON, Cisco security consultants Alfonso Garcia Alguacil and Alejo Murillo Moya will deliver a presentation about some of the known security implications of using 0-RTT. The intent is to raise awareness across the security community about that new feature.”]
Source: https://blog.talosintelligence.com/2018/08/playback-tls-story.html