A website that bills itself as providing a safer way to store Bitcoin and other digital currencies has been using a coding sleight of hand to generate private keys that are suspiciously trivial for the operators to guess, leaving all funds stored in the wallets open to theft, researchers with a different service said on Friday.
WalletGenerator.net provides code for creating what are known as paper wallets for 197 different cryptocurrencies. Paper wallets were once billed as a secure way to store digital coins because—in theory, at least—the private keys that unlock the wallets are stored on paper, rather than on an Internet-connected device that can be hacked. (In reality, paper wallets are open to hack for a variety of reasons.) While the site advises people to download the code from this Github page and run it while the computer is unplugged from the