CA Spectrum does support SNMPv3 traps. The requirement is the SpectroSERVER system receiving the SNMPv3 trap must have a an SNMPv3 profile configured that contains the SNMPv3 credentials in order to decrypt the trap for processing by the SpectroSERVER.
NOTE: Keep in mind, the SpectroSERVER receiving the trap may not be the SpectroSERVER where the device is modeled. If Trap Director is being used, traps will be sent to the SpectroSERVER where Trap Director is enabled. Therefore, the SNMPv3 profile must be configure on the SpectroSERVER where the Trap Director is enabled even though the device may not be modeled on that SpectroSERVER.