[mrpound]

It's likely Verizon using Javascript-based content injection to append that link to the footer. ISPs do this sort of thing all the time.

[chatmasta]

This page is https.

[mrpound]

So what? You don't think an ISP can intercept and break SSL? Transparent proxying is a thing.

[r1ch]

Unless they installed a MITM certificate on his device, I certainly hope not.

[mrpound]

True. Looks like it's FB adding the link.