CA Technologies, the company that operates from ca.com are definitely proud of their short, two letter domain.
But what about the domain са.com ?
A new article about punycode and IDN domains at Krebs on Security, describes how Alex Holden, founder of Milwaukee-based Hold Security Inc. is experimenting with how web browsers handle these domains.
The two domains above are visually indistinguishable, and Firefox users have to tweak their settings in order to have some visual notifications about the IDN domain.
Krebs on Security calls these “look-alike domains” and mentions a tool created by Hold Security Inc. that checks domains for existing registrations of alternate, IDN variants.
The IDN checker tool can be found here.
Here’s a portion of the results we ran on Bitcoin.com :
