"I've got a privacy policy up, so I'm covered on the data side" is something I've heard from founders who did real, genuine work getting that policy written and posted. It's a real accomplishment, and it's answering a different question than the one that actually determines whether user data is protected.
What a privacy policy actually is
A privacy policy is a written promise: here's what data we collect, here's what we do with it, here's who we might share it with. It's a legal and ethical commitment, and a genuinely important one to have, clearly written, and accurate to what your app actually does. What it isn't is a technical mechanism that enforces anything on its own.
Why the gap matters
A privacy policy can promise that user data is kept secure and only accessible to authorized people, while the app underneath has a database anyone on the internet can read directly, no login required. The policy and the reality can diverge completely, and nothing about having a well-written policy prevents that divergence from happening. The policy describes an intention. The database's actual access rules determine whether that intention is real.
A concrete way to think about it
A privacy policy is like a sign on a door saying "authorized personnel only." It communicates an intention clearly, to anyone who reads it and chooses to respect it. It says nothing about whether the door is actually locked. Both matter. They're not the same thing, and one being in place says nothing reliable about the other.
What to actually check alongside your policy
- Whatever your policy claims about who can access user data, verify your actual database and access rules enforce exactly that, not just that the policy states it.
- If your policy says data is only shared with specific named services, confirm your actual integrations match that list, rather than assuming they do.
- Treat the policy as the promise and the technical configuration as the proof, and check that the two genuinely agree.
Having a privacy policy is real, necessary work, and worth doing carefully. It was never meant to be the technical check itself, and treating it as one is where this particular gap tends to open up.