Silent Robocalls: The Hidden Threat to Your Phone
Scammers have devised a new tactic to target unsuspecting phone users. By making silent calls, they aim to confirm that a number is active and spammable, paving the way for future scams. This automated reconnaissance is a clever way for fraud operations to validate phone numbers before investing human effort in a target.
The goal of these silent calls is not to engage in a conversation but to confirm that a real person is on the other end of the line. Once this validation occurs, the attacker's ability to execute more convincing follow-on attacks is strengthened. A confirmed number can be paired with a breached email address, used to trigger password reset flows, or targeted for SIM swap fraud.
Experts warn that these types of scams are nothing new, but they have resurfaced as email and SMS phishing attacks have become less common. Attackers will reuse tactics and techniques that work, making it essential for phone users to be aware of this hidden threat.
To deal with silent robocalls, phone users should hang up and use spam filtering to block them. This approach provides more granular control and can help prevent future scams.
The resurgence of silent robocalls highlights the evolving nature of cybercrime. Scammers will continue to adapt and reuse tactics that work, making it crucial for phone users to stay vigilant. Nigerian phone users, in particular, should be cautious of these silent calls, as they can lead to phishing calls, emails, and other serious types of attacks. By being aware of this threat, phone users can take steps to protect themselves and prevent falling victim to these scams.
