Prolink router PRS1841 was discovered to contain hardcoded credentials for its Telnet and FTP services.Referenceshttps://0xsp.com/security%20research%20%20development%20srd/backdoor-discovered-in-pldt-home-fiber-routers/https://prolink2u.com/product/prs1841/https://packetstormsecurity.com/files/170342/ProLink-PRS1841-Backdoor-Account.html