Comment 4 for bug 1054776

The fact that the lens in question shows advertisements is not relevant to this problem. The same problem is true of *any* lens that performs online queries with the "active-global-search" property, even if the results are useful. It's a common use case to open local files and applications by summoning the dash and typing a file name. Doing an online search with those queries has the effect of leaking those file names to the service provider (and possibly also your ISP/IT department/hotspot operator/government).