THE ENGINEER’S GUIDE TO BLOCKCHAIN FINALITY

Summary from the TLDR Crypto newsletter

Security researchers have discovered that some applications, like Juno and Pathfinder, are not checking for finality or are incorrectly doing so. This opens the door to attack vectors like double spend attacks. After reporting this issue to the protocols in question, the researchers put this guide together to discuss their findings, thoroughly describe finality, and propose an alternative way of checking for finality.