Hi Anie,
Actually SCSP is not able to detect Phishing attack, But we can prevent desktop phishing attack with SCSP. Actually in desktop phishing, Attacker edit the host file of target system with his IP address to particular website. When Victim tries to open the same website his request redirect to Attacker IP Address. In Desktop Phishing Hosts file plays the Important role and with SCSP we can give read only premession to hosts file. After that attacker is not able to edit the hosts file on target machine.
You can go through the above articles as provided by pete to know how SCSP prevents desktop phishing.