One of the downsides of real cryptocurrencies is this. You have the keys and only you can access your funds. If someone tricks you, there is no way to reverse the transaction like they do with bank transfers if there is a proper investigation. Banks have better prevention techniques: 3D security when you spend in webshops, auto transaction blocking if you spend at unusual places or in a different country.

We are advanced in blockchain technologies, but way behind in theft prevention -> so the whole "crypto is more secure" dream falls apart.

How can we implement smart theft prevention features? What are they?