actually wrong.....
1.) US stock market does not require internet. All financial information are backed up in 3 stand alone server that does not connect to internet instead a direct Point to Point connection to each other, some spectupate they also have another point that connect to white house, but nobody knows.
The only way to hack this back up server is onsite via physical hack, and with 3 entry point doing this simultaneously. Otherwise you will have 1 or 2 failsafe backup the other, Which is quite hard.
You can hack the System online if you want, but the last time i know they back up every 12 hours, so if you do, you will only wipe trade data within the last 12 hours. And that was about 10 years ago.
2.) Every US military equipment have 2 or multiple way to operate, destroyed the US satellite would not destroy that equipment on how they operate, do bear in mind the US did fought war before the age of internet, and the worse what you say will do is to send all of us (US, China, Russia, India etc) back to a pre 1960 battlefield. Well you cannot expect your own network and satellite will be safe and just you destroying the US satellite right?
Furthermore, there are 3000 or more US launch satellite current orbiting in the sky , you have to destroy enough to take away the total coverage for US to lose the use of satellite, just 10% left will be enough to keep the satallite network, so how you destroy 2700 setallite without US retailation is your business, or you really think the US will not stop you and just sit and watch how you destroy the sat one by one?... and also US would keep launching satellite so. The number would only go up
Then come down to the last point. Dont forget who actually invented the Internet and the.Internet protocol? Would you not think DOD not twited something in the Internet protocol we are currently using to protect them from using against the.US?