Kudos to Tursas, who pointed out an interesting throwback to a long absent enigma: www.cortana.org. Aye, Cortana. If you're wondering, the hexadecimal teaser has already been translated:

Closing time. Whmper?

Vive HexEdit. However, as Pie-rat pointed out, this may be related to our Cortana, but possibly not our Cortana: the WHOIS for cortana.org. Definitely something to consider.

• Forum: www.cortana.org !?!