Insecurities of WhatsApp's, Signal's, and Threema's Group Chats

Recently, the theoretical and practical analysis of secure instant messenger protocols received much attention, but the focus of prior evalu...

Metadata and Taxonomies

Metadata and taxonomies are related. In The Accidental Taxonomist , 2 nd edition (pp. 15-18), I explain that most, but not all, taxonomies ...

CORS misconfigurations on a large scale

Inspired by James Kettle 's great OWASP AppSec Europe talk on CORS misconfigurations, we decided to fiddle around with CORS security is...

CISSP

A cold site is a permanent location that provide you with your own space that you can move into in case of a disaster or catastrophe.   It ...