TRON founder Justin Sun said the network has advanced its post-quantum security preparations, including the deployment of end-to-end post-quantum signature support on the Nile testnet, and that quantum-resistant protections could be brought to mainnet at any time.

Sun made the remarks during a fireside chat with Kevin Follonier, founder of When Shift Happens. He said the network is closely monitoring progress in both quantum computing and artificial intelligence. Post-quantum cryptography refers to cryptographic methods designed to withstand attacks from sufficiently powerful quantum computers — a concern for public blockchains, whose exposed public keys sit on open ledgers and form the basis of the long-feared quantum attack scenario.

In an X post published on October 10, 2026, Sun wrote:

TRON's post-quantum cryptography is now live on testnet. We're closely tracking progress in quantum computing and AI, and we're ready to bring quantum resistance to mainnet at any time. We're committed to keeping user assets secure, and TRON is set to be one of the few major…

— H.E. Justin Sun 👨‍🚀 🌞 (@justinsuntron) October 10, 2026

The TRON founder added that the network aims to become one of the few major blockchains to implement quantum resistance before "Q-Day" — the point at which sufficiently advanced quantum computers could potentially derive private keys from exposed public keys.

TRON's Nile testnet enabled its first post-quantum signature algorithm, FN-DSA-512, earlier this year, opening the feature to developers for testing, Sun disclosed in July. FN-DSA is a post-quantum digital signature scheme selected for standardization by the U.S. National Institute of Standards and Technology (NIST), which has worked with the broader cryptographic community to vet algorithms capable of resisting quantum attacks.

Speaking at Bitcoin Asia 2026 in Hong Kong in August, Sun said TRON plans to upgrade its entire network to quantum-resistant security by the end of 2026. He noted that the network had spent the previous year developing quantum-resistant mechanisms and released a quantum-resistant address solution in the first half of 2026. With post-quantum support so far confined to testnet, a mainnet activation would be the next milestone to watch in that timeline.