Tech groups face a shorter security timeline
Google is urging banks, governments and technology companies to accelerate their preparations for a future in which quantum computers can defeat much of today’s encryption. In a new warning, the company said the risk could become serious before the end of the decade, placing 2029 on the industry’s planning horizon and raising pressure on engineering teams to begin shifting sensitive systems to post quantum protections.
The message does not mean such a machine already exists. Quantum computing remains an emerging field with major scientific and engineering barriers still unresolved. But Google’s position suggests the company now views the possible arrival of a cryptographically relevant quantum computer as close enough to require immediate action, especially in areas tied to authentication, digital signatures and other core security functions.
In its blog post, the Alphabet owned group said the encryption standards currently used to protect confidential information could be vulnerable once a large scale quantum computer becomes viable. Google also said it has adjusted its internal threat model to give greater priority to migration toward post quantum cryptography for authentication services, and recommended that other engineering teams do the same.
The warning adds to a growing shift in cyber planning. For years, the prospect of quantum code breaking was treated as a distant research issue. It is now moving into mainstream security strategy, particularly for institutions that handle long lived data whose value will persist for years into the future.
Powerful promise meets difficult reality
Quantum computers are designed to use the principles of quantum mechanics to process certain mathematical problems in ways that conventional machines cannot easily match. Large technology groups including Google and Microsoft, along with universities in the United Kingdom and the United States, are investing heavily in that effort. Researchers see the field as a possible path to breakthroughs in computation, but the hardware remains extremely difficult to scale.
Current systems are small, fragile and expensive to operate. Some require vast quantities of helium to keep quantum hardware near absolute zero, while others demand painstaking laser alignment over extended periods. The machines that work today are not yet large enough to perform the tasks that matter most for encryption breaking or the most ambitious scientific applications.
The long term challenge lies in building a machine with hundreds of thousands or even millions of stable qubits, the quantum equivalent of classical bits. That goal remains out of reach because quantum states are highly delicate and can lose coherence easily. Keeping qubits stable long enough to complete useful work is one of the central obstacles facing the industry.
Those technical hurdles are why many experts still place the arrival of a machine capable of breaking modern encryption somewhere between the 2030s and the 2050s. Leonie Mueck, former chief product officer at Cambridge based startup Riverlane, said Google’s statement should not be read as proof that such a machine will definitely exist by 2029. Instead, she suggested the company is signaling how seriously it now takes the possibility.
Governments are already planning for exposure
Even if the most powerful quantum systems remain years away, security agencies are already preparing for the consequences. Mueck said intelligence communities have been thinking about the issue for more than a decade, in part because information collected today could become readable in the future if encryption standards are not updated in time.
This concern is often described as a store now, decrypt later threat. In such a scenario, attackers collect encrypted material today and keep it until a sufficiently advanced quantum machine becomes available. That risk is especially important for documents, records and communications whose sensitivity extends well beyond the present moment. A file that seems secure now may become exposed years later if protected under older standards.
Mueck argued that this makes the issue particularly serious for classified government material and other information with long shelf lives. Historical records from a century ago may no longer matter, but information from the last 10 years could still be highly relevant and damaging if revealed. That changes the logic of cyber defense. The question is not only whether systems can resist current attacks, but whether the data they store will remain unreadable in a future quantum environment.
Public authorities have already started setting target dates. Last year, the United Kingdom’s National Cyber Security Centre told organizations they should prepare their systems against quantum enabled attacks by 2035. Google’s timeline is more aggressive, suggesting that the commercial sector may need to move sooner than some official road maps have implied.
Migration pressure grows across the industry
For technology providers, the practical challenge is no longer abstract research alone. It is migration. Moving authentication systems, signature infrastructure and sensitive data protection to stronger cryptographic methods will take time, testing and coordination across complex networks. That is especially true for banks and governments, where legacy systems are widespread and security failures can carry large financial or national consequences.
Google’s warning is likely to increase pressure on corporate security teams to review which data needs long term confidentiality and how quickly they can transition to more advanced protections. The company’s own decision to prioritize post quantum migration for authentication services shows that major platforms are beginning to act before the underlying hardware reaches full maturity.
The broader implication is that quantum risk is becoming an operational issue, not just a scientific milestone. No consensus exists on the exact year when encryption breaking becomes feasible at scale. But Google’s latest stance suggests that waiting for certainty may no longer be an acceptable strategy. For sectors that depend on trust, secure identity and durable confidentiality, the cost of moving too late could be far greater than the cost of preparing early.
