First of all, choose the right domain names. Easier said than done. There are a handful of sites that offer domain name identity services. You can also perform an advanced search by categorizing the type of name you are looking for and you can even search for domain names that rhyme. If the name you want isn t available, you can buy it in the aftermarket right there as well.
Domain names are extremely inexpensive.
Don t be foolish and think that nobody is going to invade your online space, be proactive and strengthen the barrier to entry in the space. Most companies in this space are securing between 100 and 500 domain names that relate to them. It is a VERY cheap way to protect your identity. Once you secure the names, choose one that you will use as your main company site and have the others forward to that site. This way, you can also take advantage of the additional traffic.