What it's best to look out for.
Social Engineering. This sums it up now days. The perps need to "and the key words are " (trick you/allow) their infection privileges.
Be diligent in scanning documents and files that you have downloaded before execution, check those website addresses before clicking them, same with links/URLs on social media, email, ect, upload them to Virus Total and check them.
Keep all your personal stuff backed up on external devices, do this incrementally. Create system images store offline as well as a "just in case".
Chances that Trinity from Matrix will hack your network and router as a home user are quite slim, you are not lucrative enough for a skilled hacker to chance on you.
As another forum member around here states "stay safe but not paranoid"