A browser extension
- How it gets in
- Runs inside your everyday browser and reads groups as you scroll
- Whose account
- Yours, in your normal browser session
- Who carries the risk
- Yours
The cheapest thing to build and the most exposed thing to use. The extension is logged in as you, in the same browser you use for everything else, and whatever it does is indistinguishable from you doing it.
It also only sees what is on screen, so it works when your browser is open and stops when it is not. Several vendors in this category now market against extensions specifically, which tells you how the risk is perceived by people who build these tools.