This guide is designed to give sellers a practical understanding of the topic before they make marketplace or business decisions. Requirements and platform policies can change, so current official marketplace information should always be checked for time-sensitive details.
Use unique credentials
Use strong, unique passwords for marketplace and connected business systems. Avoid credential reuse across unrelated services.
Protect recovery methods
Keep recovery email addresses and phone numbers current and controlled by the responsible person or business.
Limit staff access
Give staff only the access required for their role and remove access promptly when responsibilities change.
Review integrations
Keep a record of inventory, shipping and other connected systems and review access periodically.
Secure devices
Keep operating systems and browsers updated on devices that access seller accounts.
Create an incident process
Document who responds to suspicious access, what evidence should be preserved and which official marketplace support channel should be used.
Handle sensitive data carefully
Do not send passwords, identity documents or payment information through insecure or unnecessary channels.
Password management
Use long unique passwords and a reputable password-management process. Never reuse marketplace credentials for email, banking or unrelated systems.
Recovery security
Protect recovery email and phone access and remove dependencies on former staff or providers.
Role-based access
Separate catalog, fulfillment, finance and administrative permissions where possible.
Connected applications
Maintain a register of third-party tools, purpose, owner and review date; remove obsolete integrations.
Phishing awareness
Verify unexpected login, document or payment requests through trusted channels rather than suspicious links.
Incident response
Secure affected accounts, rotate compromised credentials, review recovery methods, revoke suspicious access, preserve evidence and contact official support.
Offboarding
Remove marketplace, email, password-manager, inventory, shipping and support-tool access when staff or contractors leave.
Related resources
Compare the eBay seller guide and Amazon seller guide.