The Internet is compromised

In a similar way, another attack called QUANTUMCOPPER could allow the NSA to automatically corrupt files you’re downloading and potentially backdoor the application you’re about to install.

Fundamentally it does not matter what you do, if you’re targeted, just normally browsing the Internet will get you compromised.

.. The moral of the story is that at this point the Internet has been completely and silently militarized without our knowledge. Figuratively, at every pathway of the Internet there is an hidden control point where anybody transiting is monitored and potentially harassed.