Using outdated drivers can pose a security risk. Vendors occasionally patch drivers to fix vulnerabilities that could allow attackers to execute code remotely via malformed packets. Users are advised to check the Tenda website periodically for updates, although updates for older budget adapters are infrequent.
lsusb | grep -i realtek dmesg | grep -i r88 tenda u1 driver
Here are some additional tips and tricks for using your Tenda U1 wireless adapter: Using outdated drivers can pose a security risk