OK, twice now, someone has attempted to modify the registration of one of my domains without authorization. I would chalk this up as a typo in their entry, except it's been the same domain both times and it also happens to be my most valuable domain. This seems a bit too coincidental to continue to write it off to poor keyboard skills -particularly since I have 50 or so other domains and nothing like it has happened to them.
I'm using NetSol. What's the BEST way to lock this one down so that it doesn't move without an act of Congress? All it takes is for someone to alter the admin and tech email addresses and they can move it away from you with no more information than is already displayed in whois.