Like nearly all modern blockchain systems, Walrus relies on cryptographic primitives—hash functions and digital signatures—that are considered secure against classical attacks but theoretically vulnerable to future, large-scale quantum computers.
This is not unique to Walrus or WAL...
It is a shared assumption across the industry. Importantly, the components Walrus uses—hash-based commitments and erasure coding—are less exposed than public-key signatures, which are usually the first concern in quantum threat models.
At present, there is no announced migration to post-quantum cryptography. What does exist is architectural flexibility. Because Walrus separates data availability logic from signature schemes, it leaves room to upgrade cryptographic components over time through governance and protocol evolution. Quantum risk is acknowledged as a future engineering problem, not an immediate existential one.