the question i ask or what i notice about a registrar is... whether or not they want to "upsell" me some "super" exclusive, ultra domain protection package.
all accredited registrars should have domain lock protection against unauthorized transfers.
adding extra protection to give a sense of "security" to keep your domains with that registrar should be their expense....not mine, that's if they want my business.
i have domains with:
enom
fab
moniker
eurodns
domainsite
namecheap
mydomain
netsol
gd
As james2002 mentioned, we recently implemented some new Security features, see here for more details.
Both the E-lock and Challenge/Response Security are free for all to use. These combined, give your account and domains probably the most security/protection offered by any other registrar.
For ultimate protection, I would suggest the Fabulous Security Key!
also ruregistrar.com - super secure, not possible to remove lock!! You can try it!! same thing with http://www.sbnames.com/
and thats what I can see in theyre homepage
Transfers out?
Need to unlock domain? - login to your account, tick the box next to domain, hit "unlock".
Need Auth Code? - login to your account, click on the domain, locate auth code on the next page.