Regularly perform and test data backups.
Back up your organizational data so you can recover it if a hardware failure, software failure, or malware infection occurs. You can schedule backups to run automatically or manually. Many operating systems include a built-in feature to perform data backups. After you create a backup, it is important to test it on a regular basis. When you test a backup, verify that the operating system, applications, and data are intact and functional. If you test data backups regularly, you will be in a better position to recover systems and files more efficiently if a failure or infection occurs. Example You are responsible for IT in your organization. One of your jobs is to make sure you can restore data if a serious event happens, such as a disaster, a hard drive failure, or a software problem. You have a backup procedure in place where you back up all your data weekly on a backup server. You set this up to occur automatically each weekend because it takes a lot of resources to perform a backup. You verify your backups every month. This ensures that your data is correct. It also confirms that you can use the data if you need to recover your systems.
Backups are used to recover data in the event of a hardware or software failure. Backups should be performed regularly based on an organizational defined frequency. They should be tested regularly to ensure they are performing as expected.
CIS Controls v7.1 10.1, 10.3
NIST 800-53 Rev 4 CP-9
NIST CSF v1.1 PR.IP-4
CERT RMM v1.2 KIM:SG6.SP1
AU ACSC Essential Eight
RE.2.137.[a] a frequency to perform backups has been defined;
RE.2.137.[b] backups are performed according to the defined backup schedule;
RE.2.137.[c] a frequency to test backups has been defined;
RE.2.137.[d] backups are tested according to a defined test schedule;
RE.2.137.[e] tests of backups include performing a restore that ensures a successful recovery; and
RE.2.137.[f] backup data is protected from a direct attack and from corruption by an attack against the primary data source.