A sender S sends a message m to receiver R, which is digitally signed by S with its private key. In this scenario, one or more of the following security violations can take place. 

(I) S can launch a birthday attack to replace m with a fraudulent message. 

(II) A third party attacker can launch a birthday attack to replace m with a fraudulent message. 

(III) R can launch a birthday attack to replace m with a fraudulent message. 

Which of the following are possible security violations?