Cybersecurity teams face a threat that has not yet fully arrived but is already being exploited. Attackers are collecting encrypted data today with no intention of reading it immediately. Instead, they store it and wait for quantum computers powerful enough to break current encryption. The tactic is called “harvest now, decrypt later,” and it reframes encryption not as a solved problem but as a ticking clock.
An upcoming webinar from Zscaler, focused on post-quantum cryptography best practices, will walk security leaders through how this threat works and what organizations can do about it now.
Why Today’s Encryption Has an Expiration Date
Widely used encryption standards like RSA and ECC depend on mathematical problems that classical computers cannot solve in any practical timeframe. Quantum computers, operating on fundamentally different principles, are expected to eventually make those same problems trivial. The timeline is uncertain, but the direction is not.
For organizations that handle data with long confidentiality requirements, financial records, intellectual property, government communications, the window to act is shorter than it appears. Data encrypted and transmitted today could be exposed years from now, long after it was assumed safe.
Hybrid Cryptography as a Transition Strategy
One practical approach gaining traction is hybrid cryptography. Rather than requiring a full replacement of existing systems, hybrid cryptography layers quantum-resistant algorithms on top of traditional encryption. ML-KEM is among the quantum-resistant algorithms being paired with conventional methods in this approach.
The advantage is continuity. Organizations can strengthen their security posture without tearing apart infrastructure that still functions. The webinar will address how hybrid cryptography operates in real environments and what a credible transition plan looks like in practice.
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Zero Trust and Traffic Inspection
Transitioning to quantum-safe algorithms does not eliminate the need to inspect encrypted traffic or enforce network policies. This is where modern Zero Trust architectures become relevant. Security teams still need visibility into what moves across their networks, regardless of what encryption standard protects it.
The session will cover how platforms like Zscaler handle both requirements simultaneously: adopting post-quantum protections while maintaining the traffic inspection and policy enforcement that Zero Trust depends on.
What the Webinar Covers
The session is designed specifically for IT, security, and networking leaders. Key areas include:
- How the harvest now, decrypt later threat works and which data types are most at risk
- The mechanics of hybrid cryptography and how ML-KEM fits into existing infrastructure
- Steps organizations can take now to begin a quantum-safe transition
- How Zero Trust architectures support security during and after that transition
Quantum computing’s impact on cybersecurity will not announce itself with a clear deadline. Organizations that treat post-quantum readiness as a future problem rather than a current planning priority risk finding that future arrives faster than anticipated.
Photo by Vishnu Mohanan on Unsplash
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