Your Encryption Will Be Broken by 2030 — And You Probably Won't Finish Fixing It

Quantum computers will crack today's encryption within the decade. The average enterprise takes 12–15 years to migrate. The clock is already running.

The Uncomfortable Truth About Your Encryption

Every RSA key, every ECC certificate, and every TLS connection securing your business today relies on mathematical problems that a quantum computer can solve with ease. The algorithm — Shor's Algorithm — reduces a problem that would take classical computers millions of years down to a matter of hours on a sufficiently powerful quantum machine.

This is not distant speculation. In 2024, NIST finalised three new Post-Quantum Cryptography (PQC) standards — FIPS 203, FIPS 204, and FIPS 205 — because the global cryptographic community has reached a clear consensus: the quantum threat is real, and it has a deadline.

The Timeline Every CISO Should Understand

Right now (2025): "Harvest Now, Decrypt Later" (HNDL) attacks are already underway. Nation-state actors are collecting encrypted network traffic today — medical records, M&A communications, financial data, and intellectual property — planning to decrypt it when quantum hardware matures.

2025–2026: NIST FIPS 203, 204, and 205 are finalised and published. US federal agencies are required to begin PQC migration. Regulated industries across the UK, EU, India, and Australia begin compliance evaluations.

2027: Enterprise procurement cycles catch up. Organisations that didn't begin planning in 2025–26 face pressure from regulators, auditors, and cyber insurers demanding PQC migration roadmaps as a condition of coverage.

2028–2030: Cryptographically Relevant Quantum Computers (CRQCs) are projected to emerge. RSA-2048 and ECC-256 become cryptographically broken. Organisations still mid-migration face critical exposure windows.

"Any data that needs to remain confidential beyond 2030 is already at risk. If you're in healthcare, finance, defence, legal, or government — assume adversaries are harvesting your encrypted traffic right now."

What Is "Harvest Now, Decrypt Later" — And Why It Matters Today

You might think: quantum computers don't exist yet, so why worry now? The answer is simple and sobering: your data doesn't become worthless when it's decrypted — it becomes worthless when it loses its value to an attacker.

Long-lived data — patient records, attorney-client communications, 10-year financial forecasts, military intelligence, IP documentation — retains its value for decades. Attackers know this. They are intercepting and storing your encrypted traffic today, at scale, and will decrypt it the moment quantum hardware makes it possible. This attack requires no sophisticated exploit — only patience and storage, both of which nation-state actors have in abundance.

The Three NIST Standards You Need to Know

NIST's August 2024 finalisation of post-quantum standards gives enterprises a clear target. Here is what each standard covers in plain terms:

FIPS 203 — ML-KEM (Module-Lattice Key Encapsulation Mechanism)

Replaces RSA and ECC for secure key exchange. This is what secures your TLS connections, VPNs, and encrypted messaging channels. ML-KEM is built on lattice-based mathematics believed to be resistant to quantum attacks.

FIPS 204 — ML-DSA (Module-Lattice Digital Signature Algorithm)

Replaces RSA-PSS and ECDSA for digital signatures — including code signing, PKI certificates, and document authentication. Any workflow that relies on verifying the authenticity of data will need to migrate to ML-DSA.

FIPS 205 — SLH-DSA (Stateless Hash-Based Digital Signature Algorithm)

A conservative, hash-based alternative to ML-DSA. Offers higher assurance for long-lived signing use cases where conservative security assumptions are critical — such as root certificate authorities and critical infrastructure signing.

Why Most Enterprises Are Dangerously Behind

The cryptographic infrastructure of a modern enterprise is vast and often invisible. Consider what typically exists across an organisation:

• TLS certificates across every web property and API endpoint
• VPN gateways and remote access infrastructure
• Code-signing pipelines and software delivery systems
• Database encryption at rest across cloud and on-premise environments
• Hardware Security Modules (HSMs) with long hardware replacement cycles
• Mobile SDKs and third-party library dependencies
• Legacy applications that haven't been updated in years

Every single dependency needs to be discovered, inventoried, prioritised, and migrated. In our experience, most organisations discover they have three times more cryptographic dependencies than they initially estimated. That discovery process alone takes months.

Who Faces the Most Urgent Risk Right Now

While every enterprise should be planning, some sectors face immediate, acute exposure:

• Financial Services — Transaction records, customer data, and regulatory filings that must remain confidential for decades are prime HNDL targets.
• Healthcare — Patient records held under HIPAA, India's DPDP Act, and similar regulations carry long retention mandates, making them high-value harvest targets.
• Defence and Government — Classified communications and intelligence data are already the primary focus of nation-state HNDL campaigns.
• Legal and Professional Services — Attorney-client privilege, M&A negotiations, and IP documentation are irreplaceable once compromised.
• Critical Infrastructure (OT/ICS) — Industrial control systems with 20–30 year operational lifespans will outlive today's encryption by a wide margin.

SG2 Technologies' Approach to PQC Migration

SG2 Technologies offers end-to-end Post-Quantum Cryptography migration services for enterprises in regulated industries across India, UK, US, Australia, Singapore, and UAE. Our five-phase approach:

1. Cryptographic Discovery and Inventory — We map every cryptographic asset in your environment: algorithms, key lengths, certificates, libraries, and protocols across cloud and on-premise systems.
2. Risk Prioritisation and Roadmap — We classify assets by data sensitivity, shelf life, and regulatory exposure. We build a phased roadmap that matches your risk profile and operational constraints — not everything needs to migrate at the same pace.
3. Hybrid Cryptography Deployment — We implement hybrid schemes that run classical and post-quantum algorithms in parallel, giving you quantum resistance today without breaking existing compatibility.
4. NIST FIPS 203/204/205 Implementation — Full migration to ML-KEM, ML-DSA, and SLH-DSA across your cryptographic surface, validated against compliance requirements for your jurisdiction and industry.
5. Cryptographic Agility Engineering — We build your infrastructure to be algorithm-agile — capable of swapping cryptographic standards without a full re-architecture as the field continues to evolve.

"Post-quantum cryptography migration is not optional, and it cannot wait until quantum computers arrive. By then, the data that matters most will already be in the hands of adversaries — waiting to be unlocked."

The Bottom Line

The organisations that begin their cryptographic inventory and PQC migration planning in 2025 will be the ones that emerge from the quantum transition with their data — and their reputation — intact. Those that wait will face a narrowing window, rising costs, and regulators who will show little sympathy for organisations that had years of warning.

SG2 Technologies has delivered cybersecurity and cryptography work across 20+ projects globally, maintaining a 98% client satisfaction rate across regulated industries. Our team is certified, experienced, and ready to begin with a no-obligation assessment of your current cryptographic posture.

The first step is simply knowing where you stand. We can help with that.