Linked Presentation: Every Signature is Broken: On the Insecurity of Microsoft Office’s OOXML SignaturesIsolated and Exhausted: Attacking Operating Systems via Site Isolation in the BrowserWe Really Need to Talk About Session Tickets: A Large-Scale Analysis of Cryptographic Dangers with TLS Session TicketsExploring the Unknown DTLS Universe: Analysis of the DTLS Server Ecosystem on the Internet