Nearly 3500 domains are hijacked from rightful owners every week.You can be a victim too.Domain hijacking si the process by which internet domain names are stolen from the rightful registrant.
Here are some advices of how to protect your domain name from beeing hijacked given by Brett Lewis, Internet Attorny:
"Always maintain accurate contact information with your registrar or services provider.
Register Your Domains with a Reputable Registrar.
Never Allow your Listed Email Address to Expire.
Keep User Names and Passwords Secure.
UseLock Your Domain a Whois Privacy Service.
Monitor Your Portfolio."
If you follow these steps you can be sure that the chance of your domain names being stolen,is very little.