"Calls where no one responds are rarely accidental. In many cases, they are automated reconnaissance events. Fraud operations run at industrial scale, and before they invest human effort in a target, they validate that a number is active and answered by a real person."
"In modern fraud ecosystems, verified contact data has value. It is bought, sold, and reused. A silent call can serve as a filtering mechanism, separating dormant numbers from reachable individuals. It is less about the conversation and more about confirming that there is someone on the other end."
Silent or delayed-response calls from unknown numbers are typically not accidental but rather automated reconnaissance operations. Scammers use these calls to verify that phone numbers are active and answered by real people, not dormant lines. Once confirmed, verified contact data becomes valuable in fraud ecosystems where it is bought, sold, and reused among criminal operations. This validation process separates active numbers from inactive ones, allowing scammers to target confirmed victims with phishing calls, emails, or more serious attacks. The primary goal is confirmation rather than conversation, enabling scammers to operate at industrial scale by filtering out unproductive targets before investing human effort.
Read at ZDNET
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