Three codes could be found in the TECTHULHU EXPERIMENT post on the Investigate Ingress blog.
[1] ik373esa27eld
[2] 838374535213555552557177
[3] B2z3mZLHAtu5m3HL
Code #1
Observations
Passcode format is there but reversed, dashes will help you
Convert to morse
.. -.- ...-- --... ...-- . ... .- ..--- --... . .-.. -..
Swap morse
-- .-. ---.. ..--- ---.. - --- -. --... ..--- - -.-- .--
Convert morse to text
MR828TON72TYW
Reverse
WYT27NOT828RM
Code #2
Observations
All numbers, there is a pattern in there expect for the central part
Let’s start by making pairs to see what we are working with
83 83 74 53 52 13 55 55 52 55 71 77
Convert decimal to Ascii except for the keyword part: 1355
SSJ54 1355 747GM
Convert the keyword part from leetspeak
ssj54less747gm
Code #3
Observations
20 characters, capital and lowercase letters and numbers. Usually it’s 24 but 20 will do just fine
Inverse the case of the letters
b2Z3MzlhaTU5M3hl
Convert Base64 to text
ofw39ai593xe
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