yes 15 seriously.
Cybersquatting was made illegal by the passage of a US federal law in 1999 known as the Anti-Cybersquatting Consumer Protection Act. The law became necessary because numerous large companies were forced to pay large sums to buy their domain names from third parties.
"Cybersquatting, the practice of buying up a domain in order to profit from a trademarked name, is prohibited under the 1999 Anticybersquatting Consumer Protection Act as well as a set of international guidelines called the Uniform Domain-Name Dispute-Resolution Policy. Disputes are usually mediated by the National Arbitration Forum or the U.N.'s World Intellectual Property Organization."
The German company involved is called Endmark (not even same name) and has registered 15 domain names, yes seriously, that are similar to theirs, (including Andmark). They CANT register the .au name Endmark, or Andmark because of the Australian requirement for an office located here.
My point being that advocating the registration of multiple domain names by the author is only encouraging this counter productive business practice.