Security Threats and Mechanisms
Threats protected against by SNMPv3:
1. Masquerade/data origin authentication: interloper assumes the identity of a sender to gain its privileges.
2. Modification of information/data integrity: alteration of in-transit messages.
3. Message stream modification: messages are re-ordered, delayed, or replayed
4. Disclosure/data confidentiality: privileged information is obtained via eavesdropping on messages.