I have mixed impressions of Kaspersky Industrial CTF - it was unusual to have no live chat, no announcements, no varying degrees of challenge difficulty; the “industrial” nature of the CTF was not reflected in the tasks. On the other hand the challenges were interesting and hard, so it was a great learning experience with lots of variety - from PHP serialization to .Net obfuscation. In any case - time well spent.

Writeups:

doubles

glardomos