Show port-security log

show port-security intrusion-log

switch(config)# sh port-security intrusion-log

Status and Counters - Intrusion Log

Port   MAC Address   Date / Time
------ ------------- --------------------------
23    000087-c78b49 11/19/14 11:09:30
23    000087-c78041 11/19/14 11:12:29
23    000087-c781c1 11/19/14 11:14:08