CIS Control 5: Account Management
Use processes and tools to assign and manage authorization to credentials for user accounts, including administrator accounts, as well as service accounts, to enterprise assets and software.
Why is this CIS Control Critical?
It is easier for an external or internal threat actor to gain unauthorized access to enterprise assets or data through using valid user credentials than through “hacking” the environment. There are many ways to covertly obtain access to user accounts, including: weak passwords, accounts still valid after a user leaves the enterprise, dormant or lingering test accounts, shared accounts that have not been changed in months or years, service accounts embedded in applications for scripts, a user having the same password as one they use for an online account that has been compromised (in a public password dump), social engineering a user to give their password, or using malware to capture passwords or tokens in memory or over the network.
Administrative, or highly privileged, accounts are a particular target, because they allow attackers to add other accounts, or make changes to assets that could make them more vulnerable to other attacks. Service accounts are also sensitive, as they are often shared among teams, internal and external to the enterprise, and sometimes not known about, only to be revealed in standard account management audits.
Finally, account logging and monitoring is a critical component of security operations. While account logging and monitoring are covered in CIS Control 8 (Audit Log Management), it is important in the development of a comprehensive Identity and Access Management (IAM) program.