What sharing grants
- Access to ad accounts, Pages or pixels, at the level you chose.
- The partner's people can act on them.
- Problems on the partner side can reach you.
Check
- List the partners and the assets shared with each.
- Confirm each partner is a real working relationship.
- Remove any you do not recognise.
- Record the change for a review.
Then
Request a review and say what you shared, with whom and why. If a partner is not one you added, treat it as a security matter.
Official sources
- About business portfolio and business asset permissions (Meta Business Help Center)
- Recover a hacked or compromised business portfolio (Meta Business Help Center)
Meta changes its help pages, menus and forms often. Follow the wording on your own screen and the current Help Center. Ads Account Recovery is an independent service and is not affiliated with Meta.