| Physical cash is much more difficult to: 1. Handle in large quantities. The ransom paid here was $1 million. With crypto, transferring that much is a few keystrokes. With cash, it's basically a large bag of cash that needs to be moved around. 2. Hold for ransom. Given point #1, kidnappers (of people and data) know that it's much easier to demand payment of large amounts in crypto than cash. If you kidnap a rich person in the crypto world, kidnappers know it's easy for him to sign over a very large amount of bitcoin quickly, which looks to be what happened here. Even for a very wealthy person, it's not logistically easy to get a million dollars in cash, never mind hand it over in a way that isn't a huge risk for the kidnappers. 3. Launder. Crypto tumblers are still a thing despite US government crackdown. Laundering cash with recorded serial numbers is much harder. I'm not denying that crypto may have some legitimate uses, but it's basically a dream come true for criminals. |
If criminals know somebody holds a significant amount of crypto, such as the CEO of a crypto company, they don't need to have them contact somebody else to withdraw and deliver a large amount of physical cash. They don't need to convince anyone they're serious. If the victim has their phone with them or can remember a password, then the criminals just have to coerce the victim into making a transfer.
Arguably, this isn't even really kidnapping in the traditional sense. It's high-tech mugging.
Owning a significant amount of crypto-currency and carrying the ability to make a transfer around in your head or pocket is basically the same as carrying a suitcase full of cash.