A software update corrupts system logs. Explain why this can be an integrity issue and how it may also affect availability.
Answer
Corrupted logs are no longer reliable records, so their accuracy and trustworthiness are undermined, which is an integrity issue. Corruption can also disrupt logging services or systems that depend on them, causing failures and affecting availability. The effects differ: unreliable records affect integrity, while interrupted access to a service affects availability.
Explanation
### Why this is right
Logs are records used to understand system activity. If an update corrupts them, their reliability is reduced, which is an integrity concern. The material also notes that logging services or dependent systems may fail, which can make services unavailable.
### The concept
Integrity applies to records as well as ordinary business data. A log is useful only if it accurately records events and can be trusted during monitoring or an investigation. Availability is different: it asks whether users or systems can access a service when needed. A single faulty update can therefore harm the trustworthiness of records and interrupt systems that rely on logging.
### What a good answer covers
- Explain that corrupted logs are unreliable records.
- Identify the reliability problem as an integrity impact.
- Explain that failures in logging or dependent systems can affect availability.
- Distinguish data trustworthiness from service access.
### Remember
Ask separately whether records can be trusted and whether the service can still be used.
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