Isolate
Use a dedicated persistent Profile for the authorized account, store, client or channel context.
Solutions
Keep client or campaign work contexts separated and use Automation Studio or Browser API for approved repetitive operations.
Architecture
Use a dedicated persistent Profile for the authorized account, store, client or channel context.
Apply the required proxy, extensions and browser settings at Profile level.
Work manually or run Automation Studio/User Scripts using the same persistent state.
Keep human review around uncertain outcomes, account-sensitive actions and exceptions.
Use responsibly