Secretive data-analytics firm Palantir Technologies has thrived in the shadows, but a coming IPO could poke holes in its most valuable asset — its reputation

· Palantir Technologies, one of the oldest unicorns in Silicon Valley, will face new levels of scrutiny when it finally reveals its financial information ahead of a public listing expected early this fall.
· The Peter Thiel-backed startup built its reputation as a secret purveyor of government spy technologies, supplying...