Three codes were hidden in the HTML source of the THE FIRST JOURNEY: NAVARRO post on the Investigate Ingress blog.
[1] rsapi5cgp7o795pntaio
[2] bxsrppzcwpitn
[3] 162121750003007741215
Code #1
Observations
20 characters with the right amount of numbers for valid passcode
Code #2
Observations
You might find it easier to spot the keyword if you look at it from another angle
Code #3
Observations
Somewhat like the opposite of #2