Don't abbreviate 2020. It's for your own good

[Maeve]

17. It may not be needed, but it couldn't hurt

https://www.snopes.com/news/2020/01/03/avoid-writing-year-2020-as-20/?collection-id=229487

Many critics found the subject of these warnings rather unlikely, however, noting that many documents are vulnerable to fraudulent alteration by a variety of means regardless of how any dates they include might be rendered. And in such cases, various forms of evidence can usually be marshaled to prove the alteration and thwart its purpose.

Others believe the maxim about “an ounce of prevention is worth a pound of cure” still holds true: scammers generally seek easy targets, so any simple action that can potentially discourage their efforts — including writing out the full date — will usually be easier and more effective than trying to undo damage after the fact.

Whether to follow this advice is an exercise left to the reader: It may not help much (if at all), but neither will it hurt.