Security and your data
Short answers to what people ask before connecting a marketplace or a bank. The Security page holds the full detail.
Checked against the product on 2026-11-04
Step 1: Amazon: read-only, finance only
Nexus holds the Finance and Accounting role only, to read your settlements and financial events. It has no access to inventory, listings, advertising or buyer personal data. Your access is stored encrypted.
Step 2: Wise: a read-only token
You create the token in Wise with read access only. Nexus stores it encrypted and uses it only to pull your statements. You can revoke it in Wise at any time.
Step 3: Who can change your books
The database refuses any entry whose debits do not equal its credits. A posted entry is locked, and a correction is a new reversal entry linked to the original. Each post is written to an audit log, and on a single-user book it also writes a sole-approver attestation.
Step 4: Signing in
Sign in with your email. Two-step sign-in with an authenticator app is available to every account, and enforcement for administrators is rolling out in stages.
Step 5: Read the details
The Security page explains each control and how you can check it. The Subprocessors page lists the services that handle data for us.