[javier_e06]

The site:

levjj.github.io

is trying to scan open ports in system. (Blocked by Port Authority add-on in Firefox)

That is not thinking like a Computer Scientist.

[pkage]

Looks like it's trying to use Runestone[0] (a textbook authoring tool) to get the number of online students but the server url is improperly configured to point at localhost (hence the port scan trigger).

[0] https://runestoneserverascholer.readthedocs.io/en/latest/ind...

[novaleaf]

Took a look at Port Authority... it's permissions require access to all data on all websites. Trading one risk for another (bigger) one? It's understandable why such access is needed, but really too bad for privacy.

[DaSHacka]

Port Authority is open source

https://github.com/ACK-J/Port_Authority

[hiccuphippo]

Can UBlockOrigin do the same as port authority if I add blocks for localhost and local ips?

[rolandog]

I think NoScript does that as well (it has a LAN checkbox).