Security Validation and Authentication Failures
Counter name: Security Validation and Authentication Failures
This counter is incremented whenever a message is rejected due to a security problem not covered by the "Security Calls Not Authorized" counter. Such problems include:
Client token cannot be read from the message.
Client token has failed authentication (for example, bad password).
Signature verification has failed (for example, the message has been tampered).
The message is a duplicate from a previous one, which can happen during a replay attack.
A decryption failure has occurred.
Some required elements (for example, missing timestamp or encrypted data block) are missing from the message.
Errors have occurred during TLSNEGO/SPNEGO handshake.