|1. Integrity of information means that information accessed by the respective personnel is not tampered with.
2. Integrity makes sure that the information is not tampered whenever it travels from source to destination or even stored at rest. Information stored in underlying systems, databases, etc. must be protected through access controls and there should be an accepted procedure to change the stored/transit data.
Source: (INFOSEC Institute, 2017)
3. Integrity means assessing whether the software and critical data within your networks and systems are compromised with malicious or unauthorized code or bugs. Viruses and malware compromise the integrity of the systems they infect.
Source: (Gault, 2015)