Cybersecurity has traditionally focused on defending against threats that can cause immediate damage. However, a growing concern is changing that mindset. The “Steal Now, Decrypt Later” (SNDL) strategy is based on a simple but dangerous idea: attackers don’t need to break encrypted data today if they believe they can unlock it in the future.
This long-term approach means organizations should start thinking beyond current cyber risks and consider how the information they protect today could still hold value many years from now.
What Does “Steal Now, Decrypt Later” Mean?
In a Steal Now, Decrypt Later attack, cybercriminals or state-sponsored actors collect encrypted information and store it rather than attempting to crack it immediately. While today’s encryption remains highly secure against conventional computers, future advances in quantum computing could make some widely used cryptographic methods vulnerable.
For businesses, this creates a unique challenge. Sensitive customer records, intellectual property, financial information, and government data often remain valuable for decades. If attackers successfully archive encrypted files today, they may be able to expose that information once more powerful computing technology becomes available.
Why Long-Term Data Is Most at Risk
Not all data has the same lifespan. A marketing campaign from last year may lose its value quickly, but legal contracts, healthcare records, research, defence information and trade secrets often need to remain confidential for many years.
This makes organizations with long-term data retention requirements especially attractive targets. Even if a breach appears unsuccessful because the data remains encrypted, stolen information may still become a future liability if the underlying encryption standards are eventually broken.
Preparing for the Quantum Era
The arrival of practical quantum computing may still be years away, but preparing for the transition cannot wait until the technology is fully mature. Updating cryptographic infrastructure across large organizations takes significant planning, testing, and investment.
Many organizations are already assessing where encryption is used throughout their systems, identifying high-value assets and developing migration plans that support future cryptographic standards. Building crypto agility, the ability to update encryption methods without major disruption, has become an increasingly important part of cybersecurity planning.
Businesses looking to understand emerging quantum-safe technologies can explore PQShield to learn more about post-quantum cryptography and how organizations can prepare for the next generation of security challenges.
The Cost of Waiting
One of the biggest misconceptions surrounding quantum security is that organizations can simply respond once quantum computers become capable of breaking current encryption. Unfortunately, that approach overlooks the reality of Steal Now, Decrypt Later attacks.
If encrypted data has already been copied and stored, switching to stronger encryption in the future cannot protect information that has already left the organization’s control. Prevention is far more effective than reacting after the fact.
Looking Ahead
Steal Now, Decrypt Later represents a shift in how businesses should think about cybersecurity. The threat is not limited to what attackers can achieve today but also what they may accomplish years from now. Organizations that begin evaluating their cryptographic resilience today will be better positioned to protect sensitive information throughout its entire lifecycle, regardless of how quickly quantum computing evolves.
