When configuring systems or applications, it is crucial to avoid using certain usernames that are either reserved for system functions, inherently invalid, or commonly associated with misconfigurations. Using these names can lead to security vulnerabilities or operational issues. The following list comprises usernames that should generally be avoided:
root, abuse, adm, amandabackup, apache, bin, canna, daemon, dbus, decode, desktop, dovecot, dumper, fax, ftp, games, gdm, gopher, halt, hostmaster, ident, ingres, ldap, lp, mail, mailnull, manager, mysql, named, netdump, news, nfsnobody, nobody, noc, nscd, ntp, nut, operator, pcap, postfix, postgres, postmaster, privoxy, pvm, quagga, radiusd, radvd, root, rpc, rpcuser, rpm, security, shutdown, smmsp, squid, sshd, sync, system, toor, uucp, vcsa, webalizer, webmaster, wnn, xfs
