I would look at what system or systems is generating that alert. Alert settings are your choice for how they are set up and what you want alerted on, so if you don't want to see those, you can disable it. Most people use that for testing the alerting, then turn it off.
If nobody is doing any testing, see if that system generating the alert has a policy setting to deny access to the file - in that case, it might not get deleted and might still trigger a detection. Get with the VSE or ENS team for any assistance with that.
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