I tried Vigenère with a couple of different keys (Xbox, PhilSpencer, hmqgg, SeriesS SeriesX), I tried the Kryptos ciphers and I tried a few shift ciphers by hand but I wasn't able to get anything sensible out of it.
All I can tell is it's not a date, too many numbers, it doesn't look like a base64 number, it's probably not anything like an octal or a hex number (I tried both of those but no other bases). I couldn't think of any 12 letter words with a first and third matching letter so I'm assuming it's a proper noun or a phrase if it's a simple cipher. If it's a phrase I also don't think it has spaces in it, otherwise 6 would have to be an a or an i and 5 would have to be a space, and that didn't really make a ton of sense when I started looking at patterns or keys.
I probably won't spend anymore time on this tonight, and hopefully it'll be revealed before the end of the week, but I'm gonna put it on the whiteboard in my office and look at it every now and again. This and capture the flag were the two most fun things about security classes back in college, so this is probably my favorite thing to happen in this thread for a long time.
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