CISC-RT-000080 - The Cisco router must not be configured to have any feature enabled that calls home to the vendor.
Call home services will routinely send data such as configuration and diagnostic information to the vendor for routine or emergency analysis and troubleshooting. There is a risk that transmission of sensitive data sent to unauthorized persons could result in data loss or downtime due to an attack.
Disable the call home feature as shown below. R5(config)#no call-home