Firebase Auth code is detected in 24 binaries in nur’s static, alphabetical July 21, 2026 sample. Presence does not establish use.
In 1 of those apps, Firebase Auth ships alongside another Authentication vendor in the same binary. This is co-residence only; a dated snapshot cannot show whether it reflects migration, evaluation, redundancy, or use. Which apps? That’s in the gated view.
See the specific binaries containing Firebase Auth, their other fingerprinted SDKs, and the same-category co-residence map.
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