Rootkit hunter

Is there a rootkit hunter for A Mac ?
I am using Darwin kernel 9.7.0

Running a rootkit hunter is they only precaution I take running Linux
Never had found a rootkit.

I know it is not the same , but a lot commands I use in linux can use them on the Mac too

Interesting reading:

Why Mac Security Matters: OS X Rootkit Hunter

rkhunter binary warnings on Mac OS X ver: 10.6.4

I installed rkhunter 1.3.6, ran the rkhunter --update, rkhunter --propupd and I get all these warnings for my binaries - the /var/log/rkhunter.log says the below for each of my binaries (84 of them)

Warning: No hash value found for file '/bin/ed' in the rkhunter.dat file.
Warning: Unable to obtain current properties for file '/bin/ed'
Warning: Unable to obtain current write permission for file '/bin/ed'

Are these warnings okay to ignore - just checking - no help yet on google

Thanks!