Well that was one time deal, and nothing all that impresive really:) COG uses the same name and password for all their betas(as far as i know) and the betas are protected only by the name/ password and link. All the betas are on the site, so if you can figure out adress of the game you can get in. Having adress for Choice of Alexandria be Alexandria. Welp that wasnt exactly good idea.
It was basically more of Social engineering now that i think of it:) Just dont have your beta location be named Simply /Archangel
WELP Same problem with Virtuoso Beta. One word name for beta Literally anyone who was EVER in any COH beta can just look into it.
And EXACT SAME PROBLEM With Congresswolf.
So Conclusion: Having one word name is just invitation to make Private beta Open one.