Deus Ex crypto puzzle

There is an encrypted email in the recent Deus Ex: Mankind Divided game:

From the game files, this appears to be the string:

FILE: client.pld31bf3856ad364e35.id
CecKIjBrWWr|9Vo2DN6DOWK|86lQSYxno0s|6c4yEcxnoGs|FxAgwKsaX0I|5LMLADBrWGr|SecLIdbTR04|FxAgwMbTQW4|9r2mtqyMtmX|AGVGov0nYGu|8zg5cz0nY0u|EX@DJoCyext|F#6XUkCyN0W


If you treat the pipes as column separators, we get 13 rows of 11 characters each:

CecKIjBrWWr
9Vo2DN6DOWK
86lQSYxno0s
6c4yEcxnoGs
FxAgwKsaX0I
5LMLADBrWGr
SecLIdbTR04
FxAgwMbTQW4
9r2mtqyMtmX
AGVGov0nYGu
8zg5cz0nY0u
EX@DJoCyext
F#6XUkCyN0W


And many pairs of rows appear to share the same substrings:

SecLIdbTR04 (doesn't seem to pair with anything, CecKIjBrWWr maybe)

9Vo2DN6DOWK
9r2mtqyMtmX

CecKIjBrWWr
5LMLADBrWGr

86lQSYxno0s
6c4yEcxnoGs

FxAgwKsaX0I
FxAgwMbTQW4

EX@DJoCyext
F#6XUkCyN0W

AGVGov0nYGu
8zg5cz0nY0u


I wasn't really able to get anything out of this or if the pairings even mean anything.

I am curious if this stands out to anyone as a particular type of crypto-cipher who may be able to take this further.

• Hello, welcome to Puzzling.SE. Are there here anything what a simple Google search with terms Deus Ex Walkthrough would not provide you with instantly? – Matsmath Sep 22 '16 at 18:15
• No -- this isn't a required part of the game (I've already 100%'d it / gotten the platinum trophy). This is more of a hidden easter egg that no one has cracked yet. – user6865514 Sep 22 '16 at 18:22
• i.imgur.com/9MbwnCg.png This image of the same message was taken by a different player and posted online, but there is a character missing (the # symbol) from the last string. @user6865514 Can you recreate this image on your game? – Bulldogg6404 Sep 22 '16 at 19:08
• @Bulldogg6404 not sure if relevant, but that imgur link shows when the message is first found. The screenshot here shows the archive of all messages (in the companion app?). Could be due to a different system, a bug, a different patch, etc. – Phlarx Sep 22 '16 at 19:21
• Surprised that nobody posted the answer online. So it IS a cipher, and it requires a specific in game item to decode. Go to the Zelen Apartments in the south section of Prague, and look for a boy in a red shirt with glasses. After talking to him, a letter will show up just inside the front door of your apartment. Inside the letter is a Secret Society Decoder Pin. With the pin in your inventory, check the email again. It should be decoded now, and you'll see the message ROT13(Or Fher Gb Qevax Lbhe Binygvar). Obviously, this means that ROT(V'z wbxvat, cyrnfr qba'g qbjaibgr zr gb Uryy)! – David Robie Feb 10 '20 at 22:19