14. A non-transitory computer-readable medium comprising instructions for execution on a processor, the instructions including: storing, in an application record data store, a plurality of application records corresponding respectively to a plurality of applications; storing, in a privacy record data store, for each application of at least some of the plurality of applications, a global privacy indicator specific to the application and applicable to all users; in response to receiving a first search query from a user device: identifying a plurality of search results responsive to the first search query from the application record data store, the plurality of search results corresponding to respective ones of the plurality of application records; for each search result of the plurality of search results, selectively determining a privacy indicator based on the privacy record data store; determining a search sensitivity value based on the privacy indicators; declaring the first search query as private based on the search sensitivity value; transmitting the plurality of search results to the user device; and in response to the first search query being declared as private, transmitting a search privacy indicator to the user device.
14. A non-transitory computer-readable medium comprising instructions for execution on a processor, the instructions including: storing, in an application record data store, a plurality of application records corresponding respectively to a plurality of applications; storing, in a privacy record data store, for each application of at least some of the plurality of applications, a global privacy indicator specific to the application and applicable to all users; in response to receiving a first search query from a user device: identifying a plurality of search results responsive to the first search query from the application record data store, the plurality of search results corresponding to respective ones of the plurality of application records; for each search result of the plurality of search results, selectively determining a privacy indicator based on the privacy record data store; determining a search sensitivity value based on the privacy indicators; declaring the first search query as private based on the search sensitivity value; transmitting the plurality of search results to the user device; and in response to the first search query being declared as private, transmitting a search privacy indicator to the user device. 18. The non-transitory computer-readable medium of claim 14 wherein the instructions for determining the privacy indicator with respect to a first application include: determining whether a first rule of a set of rules is applicable to the first application; and in response to the first rule being applicable to the first application, setting the privacy indicator according to the first rule.