The summit was a single day connecting "C-Suites & Senior Executives responsible for protecting their companies' critical infractructures with innovative solution providers and renowned information security providers" (from the site).
On July 13, Over 200 persons (which including myself) participated in Trace Labs's Global Remote 2 for missing persons. This was my first CTF for cyber security or intelligence and it was enjoyable.
In my previous college class, I was shown an OS called Tsurugi. Tsurugi can be downloaded from their main page at https://tsurugi-linux.org. It is named after a legenary Japanese double-bladed sword used by ancient monks which might be something similar to the image below.