Excellent questions, Nomad.
We are now faced with internal security - in this case, the card swipe security on the door. Fixer is in front of it and easily in a position to use his skills to deal with it. But is it necessary? Right now we have a control over the security information within this section and are preventing any of this information from getting outside the building. If we just open the door and set off the alarm will Blossom's information roadblock stop that alarm from going anywhere? If so, is there a reason not to just move on quickly and not worry about what alarms we trigger? Blossom will report that she's confident her modified Lich will be able to screen all security alerts. Since she witnessed no additional stream other than the one she attached the Lich to, as far as she can tell there are no other security feeds internally or externally.
*Might the alarm get sent to someone inside the building? Blossom is confident that she's blocked all security feeds.
*If it does go to someone inside the building is there a reason why our previous handiwork wouldn't already have been internally received? See above.
*Is it possible to open the door without swiping a card? Will it just be easier to open it by coding it? Despite the concern over the security system being resolved, the door is locked and the card system is what unlocks it. Fixer has the tools to do so. DC of 16 to decrypt and unlock the door.
*How long will Blossom's handiwork last? Will it continue until some (presumably int he morning) sees the physical damage and reports it? Is it possible (likely?) that the deception could be noticed? Will its strength weaken over time? Blossom's Lich will work until discovered and attacked by a different program (probably a Killer). Since Blossom isn't there to control the Lich, it will run on AI to defend its primary function.
*Does Blossom think that all of the security would go down that same line out to the building? Or is each system separate? Could she tell from the information flows on her original work? See above.
Looking forward to everyone's answers/suggestions.