Definition ∞ High-threshold security refers to cryptographic systems or protocols designed to withstand attacks even from adversaries possessing substantial computational power, including potential quantum computers. These systems employ advanced mathematical problems that are computationally infeasible to solve with current and anticipated future technologies. They aim to provide long-term protection for sensitive digital assets and communications against sophisticated threats. This security level is paramount for critical infrastructure.
Context ∞ The pursuit of high-threshold security is increasingly urgent given the theoretical threat of quantum computing to current cryptographic standards. Research and development in post-quantum cryptography, such as lattice-based cryptography, are central to creating these resilient systems. Implementing such solutions in blockchain and digital asset environments is a critical challenge for future security.