Comprehensive and Detailed In-Depth Explanation:
Dynamic secrets in Vault are generated on-demand and have short lifespans, offering significant security and operational benefits:
* A. Unique Credentials per Instance: "Each application instance can generate its own credentials" isolates access, reducing the blast radius of a compromise. The documentation highlights: "This improves security by isolating access."
* B. On-Demand Existence: "Credentials only exist when needed" minimizes exposure time. Vault's design ensures "dynamic secrets do not exist until they are read," reducing theft risk.
* C. Least Privilege Enforcement: "Applications only have access to privileged accounts when needed" aligns with security best practices. "This helps enforce the principle of least privilege," per the docs.
* D. Invalidation of Leaked Credentials: "Credentials accidentally checked into a code repo or discovered in a text file are likely to be invalid" due to their short lifespan and revocation. "Dynamic secrets can be revoked immediately after use."
* Incorrect Option:
* E. Static Nature Misconception: "Dynamic credentials do not change" is false. The documentation counters: "Dynamic secrets change," enhancing security, but this may challenge legacy apps, not ease their use.
These benefits collectively enhance security by limiting credential exposure and scope.
Reference:https://developer.hashicorp.com/vault/tutorials/getting-started/getting-started-dynamic-secrets