Of course everyone is fallible, and this is the reason why careful admins put safeguards and layers of security. In a well-prepared system, the administrator w

Of course everyone is fallible, and this is the reason why careful admins put safeguards and layers of security. In a well-prepared system, the administrator would: #1 block input traffic on all the ports, except the required ones. as routine, after uninstalling any service, open ports are reviewed; even if a service is forgotten running, it won't be able to communicate. #2 not run redis or any service as root user. Not doing so is, to say the least, reckless, and with this assumption/context, it doesn't make much sense to theorize about software design.