Quantum threat to crypto security could expose over $2 trillion in assets, according to a 57-page white paper

During Masters in Trading Live sessions, the discussion turned to an emerging risk that many traders have not yet fully priced: the potential impact of quantum computing on cryptocurrency security. The catalyst was a 57-page white paper from Google’s DeepMind Research Center, Google’s Quantum AI division, Stanford University, and the Ethereum Foundation.

Quantum computing and the timeline for breaking crypto encryption

The paper argues that crypto encryption could be cracked with quantum computers sooner than previously expected. It frames the issue around the cryptographic foundations used by blockchains today, particularly elliptic curve cryptography, which relies on the difficulty of solving discrete logarithm problems.

Under classical computing assumptions, cracking a 256-bit key would take billions of years. The paper contends that quantum computers running Shor’s algorithm on a fault-tolerant quantum machine could reduce that timeline to single-digit minutes.

The report also notes that quantum hardware is not yet at the required stage, citing insufficient stable qubits in current processors. However, it suggests the gap to practical capability is closing about 20 times faster than the industry assumed.

Why the risk may be larger than headlines suggest

The paper highlights that some crypto holdings may be more exposed than others due to how public keys are handled on-chain. It points to 1.7 million Bitcoin held in old Pay-to-Public-Key addresses where the public key is already exposed on-chain. The paper’s discussion estimates that, at a $70,000+ Bitcoin valuation, this corresponds to over $100 billion in exposed assets.

In this scenario, the paper suggests a quantum attacker may not need a man-in-the-middle approach; instead, private keys could potentially be derived directly from public blockchain data.

It further states that 6.9 million Bitcoin across all protocols with reused public keys are vulnerable, described as 33% of all Bitcoin in existence. The paper also raises the possibility of “unspent attacks,” where fast-clock quantum computers could intercept transactions in real time.

While the paper indicates that proof-of-work mining itself is safe, it emphasizes that the vulnerability lies in the signatures—the cryptographic mechanism used to protect ownership.

Ethereum: multiple potential attack vectors

For Ethereum, the paper identifies five distinct attack vectors: account-level, admin-level, smart contract code, the consensus mechanism, and the data availability layer. It frames the exposure as spanning the broader Ethereum ecosystem, described in the article as a $600 billion-plus value.

“It is conceivable that the existence of early quantum computers may first be detected on the blockchain rather than announced.” — Directly from the Google DeepMind / Stanford paper

Scale of exposure and the need for migration

The article characterizes the situation as a potential “Y2K moment” analogy, arguing that the cost of preparation can be large even when outcomes are uncertain. It states that over $2 trillion in crypto assets are at risk, with “unknown deadlines” and a requirement for a global cryptographic migration.

Post-quantum positioning and market response

The article argues that preparation is already underway and frames the investment question as identifying which blockchain infrastructure is better aligned with a post-quantum environment.

Algorand (ALGO) as a “post-quantum” candidate

It highlights Algorand as the blockchain discussed in the session, describing it as designed with forward-looking security architecture. The article attributes this to Algorand’s design by Silvio Micali, and it describes Algorand’s Pure Proof-of-Stake consensus as not relying on the same computational assumptions threatened by quantum computing.

The article also claims that the Algorand Foundation has been researching and implementing post-quantum cryptographic primitives, including hash-based signatures and lattice-based schemes.

On market performance, the article states that on the day the paper dropped, ALGO was up 20%. It also reports that ALGO was trading at 14 cents at the beginning of the year and rallied up to 30 cents in 2025.

Broader market context for post-quantum security

The article places the discussion in a wider industry context, stating that the post-quantum cryptography market is valued at roughly $400 million. It cites a projection that the market will grow to $2.8 billion, described as a 46% compound annual growth rate.

It also notes that NIST finalized its first set of post-quantum encryption standards in 2024, and that the U.S. Department of Defense, the NSA, and major financial institutions are auditing cryptographic infrastructure.

How investors may express exposure

The article says direct exposure is not straightforward. It describes private “pure plays” as still in the venture stage and suggests that public cybersecurity companies are pivoting toward post-quantum capabilities, naming PANW (Palo Alto Networks), NXPI (NXP Semiconductors), and NET (Cloudflare).

For the most direct crypto-specific expression of the thesis, the article reiterates ALGO as the preferred vehicle, arguing that capital tends to flow toward solutions rather than problems.