Show virus immunity countdown on portal
I feel like the immunity to viruses should be shown on portal that have been virused.
Using a virus on an immune portal just waste the virus (which are already very rare) and there is no way to know when is the last time the portal has been virused. When it turns from one faction to the other, you might see in the activity several links has been destroyed at once, so you might guess the timing, but when you using a virus from the same faction (like an ADA on a blue portal, or a Jarvis on a green one) to preserve immunity, you have no way of seeing that. You can't just waste viruses to hope that you will find a timeframe that the portal is not immune.