[EagnaIonat]

Getting into a rhetoric style, rule of thirds can help.

So something like:

Custodi usorem, custodi data, custodi veritatem.

[jraph]

Maybe this?

Usorēs, data et veritas primum

Users, data and truth first.

And actually first in the sentence structure (in both languages).

(edit: I had initially used prima - neutral plural nominative for primus (adj.) to target the three subjects, which I don't know if it's right, but using the adverb feels better. I don't do Latin though)

[prmph]

Yeah this sounds better, the proposed slogan kind of does not smoothly roll off the tongue