Revisiting Past Decisions
While looking for a hotel from a big chain, Alice's computer usually warns her that the map provider's web site has an SSL-related mismatch. Alice has gotten used to this, and goes through the interaction without actually reading the dialogue that is displayed to her. While browsing the search results that the hotel chain displays, she becomes suspicious, and wonders what warning she really clicked away.
Motivates: scope of security decisions and context; past security decisions become context for future ones.