The reset removes any compromised passwords and firewall rules added by the hacker that opened doorways to your systems. Before you perform the factory reset process, locate the factory default admin account name and password from your router manufacturer's user manual or support website. 2022. 5. 30. · Will a factory reset remove hackers? The majority of malware can be removed with a factory reset of your phone . This will, however, wipe any data stored on your device, such as photos, notes, and contacts, so it is important to back-up this data before resetting your device.