Cardano founder Charles Hoskinson has warned of a significant threat to cryptocurrencies from quantum computing, suggesting there is a greater than 50% chance it could become a reality before 2033. Speaking at Consensus Miami, Hoskinson emphasized the need for the crypto industry to bolster its defenses now, rather than waiting for the threat to become urgent, according to BeInCrypto. Cardano is already transitioning to lattice-based cryptography to prepare for a post-quantum future. Hoskinson highlighted the risks posed by quantum advancements, including potential breaches of elliptic-curve signatures, which could compromise blockchain security.