A network technician is performing the initial setup of a new wireless router. Which of the following is the most important first step the technician should take to secure the device?
Disabling unused ports
Updating the firmware to the latest beta release
Changing the default credentials
Implementing port forwarding
Changing the default credentials of a router is the most effective first step in securing a router because factory-set usernames and passwords are often well-known and easily discoverable by malicious actors. Manufacturers often use the same default credentials across similar router models, which can be easily exploited if not changed. While other hardening steps like disabling unused ports and keeping firmware updated are important, an easily guessable default password presents the most immediate and critical vulnerability.
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