Guide
Protecting client data at a marketing agency
Marketing agencies hold a goldmine of client data. Here's how to keep it from leaking — and from costing you the account.
Agencies sit on exactly the kind of data attackers love: client logins, ad accounts, CRM exports, brand assets, onboarding questionnaires full of business detail. And agencies move fast, with lots of tools and lots of hands. That combination is how client data leaks.
The agency-specific risks
- Shared logins and stored client passwords in spreadsheets or chat — one leak exposes every client.
- Client data in too many tools — every integration is another place it can leak from.
- Freelancers and contractors with access that never gets removed.
- Onboarding documents stored in places that were never meant to be permanent.
What to do
- Use a password manager with proper client vaults — never a shared spreadsheet.
- Give each person and tool the least access they need, and review it monthly.
- Keep client data in as few systems as possible, and know which ones.
- Offboard contractors the day they finish — revoke every access.
- Treat your onboarding intake as sensitive: encrypt it, limit who sees it, and delete what you no longer need.
Losing a client's data is one of the fastest ways to lose the client. We help agencies lock this down — quietly and without slowing the work.
Want us to just handle it?
Send the details to [email protected] or book a call. We'll check it for you and fix what's exposed.