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ISC2 Systems Security Certified Practitioner (SSCP) Practice Question

During a recent security incident review, you discover that several employees reset their MFA credentials after receiving voice calls that appeared to come from the corporate help-desk phone number. Because the company now allows soft-phone use on personal smartphones, you must update the security awareness training to reduce the risk of future vishing attacks without disrupting legitimate support interactions. Which of the following guidance should you emphasize?

  • Hang up and call the official help-desk number listed in the corporate directory before acting on any request received by phone.

  • Ask the caller to verify legitimacy by sending a confirmation text message from the same phone number before proceeding.

  • Enable mobile carrier spam-call filtering on all employee devices to automatically block unrecognized numbers.

  • Configure soft-phones to accept calls only from internal extensions and direct all other calls to voicemail for later review.

ISC2 Systems Security Certified Practitioner (SSCP)
Security Concepts and Practices
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