nothing can protect you from CIA. except Hardware Wallets. I suggest Trezor.
Please don't post nonsense. CIA can't hack into your systems if you know what you're doing. How on Earth would they even know which IP to look for? Bitcoin is pseudo-anonymous and actually very safe if you have a safe habit of maintaining your system and safe browsing habit.
2-factor authentication is probably one of the most valuable tools you can have to protect your investment, and I would recommend using it whenever and wherever you can, as long as you have a phone.
Multi-signature is also very safe.