Keyloggers wouldn't be so much of a problem since they usually have to embed themselves in the system, and that requires either an exploit (rare), or a administrator password (stupid). They also usually require a connection to the internet so they can send the raw data back to the person behind the keylogger, and if you have a good firewall, this shouldn't be a problem. I have Little Snitch installed, which does the job perfectly.
Also as you pointed out, Mac Scan checks for Keyloggers, and Mac Update would releases fixes for exploits as soon as they were available.
The command line on a Mac is accessible by running the program "Terminal". Use Spotlight (CMD + Spacebar on my machine) and type in "Terminal".
There are various ways of accessing the BIOS, as outlined by doing a simple Google search. It's not impossible. It might be a bit tricky to get into at first, but it's still there.
Also as you pointed out, Mac Scan checks for Keyloggers, and Mac Update would releases fixes for exploits as soon as they were available.
The command line on a Mac is accessible by running the program "Terminal". Use Spotlight (CMD + Spacebar on my machine) and type in "Terminal".
There are various ways of accessing the BIOS, as outlined by doing a simple Google search. It's not impossible. It might be a bit tricky to get into at first, but it's still there.
