Up until now, all of the codes uncovered from terminals and Section 3 Operatives as given us bonus content for games ranging from Reach to Spartan Assault.
Now though, the purpose of this website, [url=http://section3.info/]Section3.info[/url], is unknown. Vergil, going by VRGL is assisting operatives.
If you wish to help out or monitor the progress of Section 3 Operatives, you can use this [url=https://forums.halowaypoint.com/yaf_postst226523_--CLASSIFIED--SECTION-3--CAMERA.aspx]website.[/url]
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Apparently this isn't an official one, it was only set up by a community member :(