Lightwarden should be Unveiling. Knowing spells cannot overwhelm the mage, as it is Supernal knowledge directly dumped into the brain. You should probably also add a clause about locations out of sensory range requiring the use of Sympathetic Range.

I would only allow Technopathy to work on unecrypted devices, since you're simply unveiling data that's already there. An unveiling spell will not unravel encryption. I think Forces 2 or 3 (Ruling or Fraying, depending on how you interpret it) would be able to decrypt data though....