One curious Wii U owner has managed to break into a mockup admin area in the Miiverse, revealing potential game names.
When you hear the words "hack" and "security" with a home console, it might be assumed that it would involve long nights of continual code breaking and pints of coffee. Instead a user on NeoGAF Trike was able to access a debug/mock-up area by simply holding down X whilst rolling over the exit button.

Interestingly, Trike uncovered various potential game forums due to become public on 10th December. Despite having names for "Yoshi's Land Wii U", "Soul Hackers", "Metal Gear Solid", "Metroid" and "Resident Evils" with the "s", it seems to either be simple random names for testing, a hint of what's to come or a even combination of both.
There were also areas to moderate comments and manage admin users.
Since then Nintendo has responded, confirming that it was a "mock up menu on Miiverse" and has since been removed.
Regardless, not a major issue by any means, but a sign that some fine tuning certainly is in order for the new online setup and Miiverse on Wii U.