Freeze children’s SSN with all 3 credit reporting agencies. Open irs.gov, social security, and other government accounts before someone else can. I use Strongbox with Keepass databases to keep track of it all stored in iCloud so spouse can access TOTP it for shared items.

Use content blocker (I use Wipr) in Safari, and ublock origin Firefox/chrome. And then don’t download or install random software. Check your credit report every year at each credit reporting agency every 4 months by going to annualcreditreport.com