Secure an Adjust S2S events integration against spoofed requests using S2S Security tokens
domain: dev.adjust.com/en/api/s2s-api · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
Generate a new S2S Security token in the Adjust dashboard under the app's Protection tab, S2S Security section
Choose the appropriate token scope(s) — Events, Sessions, or Ad revenue — matching which S2S endpoints the token should authorize
Add the token as an Authorization: Bearer header on every S2S request (e.g. the /event endpoint call)
Test the token thoroughly in requests before activating S2S authentication enforcement in the dashboard
Handle rejected requests: a 202 response indicates a missing or wrong token, and a 401 indicates the token's scope doesn't cover the requested action
Known gotchas
Turning on S2S authentication enforcement before your server reliably sends the token causes Adjust to reject legitimate events — validate first, then enable
S2S Security tokens are incompatible with Google Tag Manager server-side event measurement — GTM-originated events get rejected once S2S auth tokens are configured
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