Someone 'Accidentally' Locked Away $300M Worth of Other People's Ethereum Funds (vice.com)
On Tuesday, a single user "permanently" locked down dozens of digital wallets containing nearly $300 million dollars worth of ether, the unit of exchange on the Ethereum platform, allegedly by accident. From a report: Now, some in the Ethereum community are considering the possibility of a risky network split, known as a "hard fork," to fix it. The affected wallets -- known as "multisignature" wallets because they require multiple people to sign off before funds are moved, making them popular with companies -- were all created with Parity, a popular program for digital wallets. Parity multisignature wallets experienced a bug in July that allowed a hacker to steal $32 million in funds before the Ethereum community scrambled to band together to hack back and secure the rest of the vulnerable ether.
1) It is extremely volatile
2) Few businesses accept cryptocurrencies
3) They are easy to steal
4) They are not backed by real world goods, so the value can easily go to zero
5) There is no anonymity because all transactions are public
Anyone who cares about their privacy and security should avoid cryptocurrencies like the plague.