spacepirate Echoing justsomedude101 A competitor engaging in bad-faith typosquatting has nothing to do with organisational security. The ONLY proactive defence against someone registering variants of your domain is to register yourself first. If you think about all the possibly typos someone can make you will see that that quickly adds up to huge amounts spent in extra registration fees.
Fortunately the UDRP exists for these circumstances, but even when the case is a clear-cut abusive registration like this it still takes time and resources to make that complaint.
The REAL question is why does VirtualTaboo, (or the affiliate they are permitting to promote them,) have so little faith in their own product that they need to try and siphon traffic from SLR?
Relevant extracts from the Uniform Domain Name Dispute Resolution Policy
(iii) you have registered the domain name primarily for the purpose of disrupting the business of a competitor; or
(iv) by using the domain name, you have intentionally attempted to attract, for commercial gain, Internet users to your web site or other on-line location, by creating a likelihood of confusion with the complainant's mark as to the source, sponsorship, affiliation, or endorsement of your web site or location or of a product or service on your web site or location.