CNN just renewed its warning about Q-Day, the unknown future date when a quantum computer becomes powerful enough to crack the encryption protecting almost every wallet, email, and bank transaction online. Coming weeks after fresh research papers from Google and Caltech shortened the expected timeline, the story has snapped back into focus across the crypto industry. Here’s what the Q-Day threat actually means, why your crypto is in the firing line, and which blockchains are already moving. 

What Is the Q-Day Threat?

Q-Day is the moment a quantum computer becomes powerful enough to break the math that locks down most of the modern internet. That math protects your online banking, your messages, and the public-private key system behind…