Registering a domain one typo away from a real one, so people who mistype or misread it land on a fake.
Like opening a fake shop at 123 Main Stret, betting that some customers will mistype the address.
Managed Domain locks down your real domain so the fakes are the only ones that fail. Email Security flags lookalike senders. Phishing Training teaches your team to read the whole address.
Should I buy the common misspellings of my domain? The two or three most likely ones, yes. You can't buy them all, which is why training and filtering cover the rest.
Every WILDCARD card exists to solve one named problem. Find yours.