I'm the author of Brainflayer. This dude is full of shit. It's true that GPU-based software would be faster, however not 100x faster. Also, cracking elliptic curve keys has nothing to do with prime factoring.

The baby-step giant-step attack described can only be used on specific public keys - it does not work on addresses and it does not work on multiple simultaneous keys.

At best this person is selling snake oil. At worst, it's malware that will drain your wallet.