Jarvis/ADA virus drop chances

ingress

I have yet to obtain a single virus from my usual farming, which is mainly L7/8 portal popups of my faction. Apart from the generally low probability of getting one, are the chances skewed depending on the portal faction & level etc.? If there are any variations, I'd like to try maximizing my chance to get these items.

  • Do green portals have higher chance of giving Jarvis virus among the 2 types (& vice versa)?
  • Does the chance of a virus drop decrease when farming opposite faction portals (similar to resos or XMP), stay same (like keys) or perhaps increase?

Best Answer

The virus and refractor are impossible to calculate. Thus far we haven't seen any controlling factor as to when or how often they drop. I'm a level 8 player who hacks at least 500 times a day, and have tried every variation imaginable. Fully charged, half, enemy lvl 8s, unclaimed etc and so forth. I've received 1 jarvis and 2 refractory for all my trouble. Yet we have level five players who don't play often, who have 3-4 already. Madness.

Also to the person who answered. Hacking enemy portals give you an increased chance of portal keys and shields, than friendly. Higher reso counts off enemy and xmp off friendly. I've noticed no difference in cubes