Silent calls like these scream potential scam activity, especially when tied to reports of Microsoft phishing attempts. The quick hang-up after no response is a classic tactic scammers use to verify active numbers for later exploitation. Don't engage if they call back—hang up immediately and block the number to avoid wasting time or risking data theft. Report it to the FTC or your carrier for tracking; these pests thrive on silence but crumble under collective reports. If it's phishing, never share personal info, no matter how urgent they sound.
When I picked up, I stayed silent; the other side said nothing and cut off after roughly six seconds.
Phony Microsoft phishing attempt