Security agencies urge regular router reboots to clear cache and block malware
Router manufacturers and security experts note that routers, as small computers, accumulate memory buildup and temporary files that degrade performance over time. Restarting a router clears this cache, refreshes connections with your modem and internet provider, forces a rescan of less congested Wi-Fi channels, and disrupts malware or lingering connections attackers could exploit. This differs from a factory reset, which erases all saved settings including network name and password.