Where do you guys hear these crazy ass rumours? Haha, some days I wonder what your sources are! I was at home at lunch and checked this out (as I had yet to do any of yesterday's missions) and the First Firewall missions was still available to me for completion. From everything I have read, it was only timegated originally. Once you complete the first firewall and upgrade the IKELOS core, you only have to wait for the daily reset.