Computer comprehension. You should have a basic understanding of what your pc is doing, web certificates, passwords, how to tell when youre being scammed, and how to protect your personal info. Knowledge doesnt need to be deep, just wide.
I would say way more important is how to identify scams, whether they are online, by phone, mail or in person. Just a basic heuristic on - is this too good to be true? So you can take a pause and go do research. Most of the time, a ticking clock on a "great deal" is just a sales scam, and that "for 10 minutes only price" comes back weekly or is just actually "the price".
Realize what makes "a call about your cars warranty" or "your credit card rate" spam at best. Take that and apply to more things. Is the car salesman vague about stuff? Probably going to try and screw you. Does the subscription only show the promotional rate? Know to get that ongoing rate before signing up. Just try and hone a gut feeling when things seem off somehow.
Despite what the term "digital natives," I really feel this skill is slipping. Many of my peers woud probably get lapped by a boomer if they had to use an actual PC again