GEEK SQUAD - RENEWAL?

HI. I JUST GOT AN EMAIL FROM GEEK SQUAD, THEY ARE NOTIFYING ME THAT MY SECURITY SOFTWARE HAS EXPIRED. PROBLEM IS - I DONT RECALL HAVING ANY SECURITY W/ THEM. IT'S BEEN ONE YEAR SINCE I'VE HAD THE MACBOOK PRO. THEN MY DAD TOLD ME TODAY THAT HE GOT THE EMAIL AS WELL AND HIS PC IS OLD. I THOUGHT MAC'S DIDNT NEED A SECURITY SOFTWARE ETC...