alt Hacker NewsJust because someone lets the electrician (LinkedIn) into their home (browser) doesn't mean they can do whatever the hell they want that isn't expressly prohibited. If the electrician wants to rifle through my desk drawers, they should ask for permission, and I will politely tell them to leave.
If your electrician was known to be hostile like the Internet, then you'd put locks on your drawers.
The browser security model right now is more like those completely ineffective "gun free zone" signs cities tack up in public parks.