Model updates are sold as security patches or feature drops. But in a HIPAA context, they're a silent, unpriced risk vector.
Your vendor pushes v3.2. It now summarizes patient history more "efficiently." Does that summary now include PHI the old version filtered out? Did a "context window optimization" inadvertently retain prompts longer? Your BAA likely doesn't cover this behavioral shift.
How are you quantifying this? I see two costly paths:
* Freeze a version and fall behind on actual security fixes.
* Pay for a full re-validation cycle with every update—compliance overhead that kills ROI.
What's the realistic trade-off here?
Show me the cost-benefit.