How can I check for viruses and malware on my MacBook Pro?
I have a MacBook Pro running OS X (10.7.5). I don't have any anti-virus or malware software installed. My yahoo email account was hacked last night, after I had added the account to Mail on my mac (which obviously involved typing in my email account password). I'm now worried that I might have a virus or malwre on my computer as I've had that email account for years with the same password (foolish I know) and never had a problem.
Is there a way to check if my mac has any viruses or malware? Which anti-virus/malware software should I install to protect my mac?
Thanks.
MacBook Pro, Mac OS X (10.7.5)