Quantum computers are no longer a distant prospect. In 2026, governments and technology companies worldwide are investing heavily in quantum technology, and the threat to existing encryption standards is becoming more concrete by the day. The problem: many organizations still secure their networks using cryptographic methods that a powerful quantum computer could potentially break. For some sectors, that risk is greater than for others. Below, you will find the eleven sectors that most urgently need to prioritize quantum-proof security and why.
Which sectors face the greatest quantum risk?
Not every organization faces the same level of risk. The quantum threat is greatest for sectors that handle sensitive long-term data, manage critical infrastructure, or rely on encrypted communications for business-critical processes. A widely discussed attack strategy is “harvest now, decrypt later”: attackers intercept encrypted traffic today and decrypt it once quantum computers are powerful enough. This makes protection against quantum threats urgent right now, even before quantum computers are fully operational. Explore our full range of solutions to see how we help organizations across sectors stay ahead of this threat.
1: Financial sector and payment infrastructure
Banks, payment processors, and financial institutions handle enormous volumes of sensitive transaction data every day. The encryption of payment traffic, customer data, and internal communications relies heavily on RSA and elliptic curve cryptography, two standards that are vulnerable to quantum attacks.
The particular risk in this sector stems from the combination of high data sensitivity and long retention periods. Financial records are often kept for ten years or more. This makes the “harvest now, decrypt later” approach especially dangerous: attackers who intercept data today can decrypt it in the future.
For financial organizations, post-quantum encryption is not an optional upgrade. It is a strategic necessity that belongs on the roadmap today.
2: Healthcare and medical data management
Patient data is among the most sensitive information that exists. Hospitals, laboratories, and healthcare institutions store medical records, diagnoses, and treatment histories for decades. This makes the healthcare sector an attractive target for attackers with a long-term strategy.
Healthcare systems are also increasingly interconnected: from electronic patient records to medical devices and remote monitoring. Every vulnerable connection is a potential attack point. Protecting sensitive data in healthcare requires encryption that holds up over the long term.
Healthcare institutions that invest in quantum-safe security solutions now protect not only their patients, but also their own continuity and reputation.
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3: Energy and utilities
Power grids, water management systems, and utility networks are critical infrastructure. Disruption to these systems has direct consequences for society. The operation of power plants, smart meters, and distribution networks depends on digital communication channels that must be protected against eavesdropping and manipulation.
This sector also faces the challenge of legacy systems: many industrial control systems were designed for an era without sophisticated cyber threats. Quantum-proof security must be integrated into existing infrastructure that is sometimes decades old.
The urgency is significant: a successful attack on energy systems could cause outages on a national scale.
4: Government and defense
State secrets, diplomatic communications, and military operations demand the highest level of security. Governments around the world are well aware that rival states and state-sponsored actors have been collecting encrypted traffic for years, expecting quantum computers to decrypt it in the future.
Defense and intelligence agencies have therefore begun transitioning to post-quantum encryption early. For government organizations that have not yet started, closing that gap is a priority, as national security is at stake.
Local governments, regional authorities, and public services also process sensitive citizen data that requires long-term protection.
5: Telecommunications and internet providers
Telecommunications companies and internet providers form the backbone of digital communication. They carry billions of messages, calls, and data transactions every day. The security of these communication flows is fundamental to citizen privacy and the integrity of business communications.
If a telecom provider is vulnerable to quantum attacks, so is every customer using that network. The responsibility that telecoms carry makes quantum security a baseline requirement for this sector, not an optional extra.
Providers that invest in quantum-safe network infrastructure now are also building a competitive advantage: customers are increasingly choosing providers with demonstrably strong security.
6: Transportation and logistics networks
Railways, airports, ports, and logistics chains depend on real-time data communications for planning, tracking, and operations. Disruption or manipulation of these communications can lead to delays, accidents, or serious operational failures.
Systems in the transportation sector are increasingly interconnected, from automated train control to digital freight handling. This growing connectivity expands the attack surface. Real-time network monitoring is essential in this environment to detect anomalies immediately.
Quantum-proof security protects not only data, but also the safety of passengers and cargo.
7: Maritime sector and shipping
Ships operate in environments where communication relies on satellite links and radio waves, channels that are inherently more vulnerable to interception than fiber-optic connections. Navigation data, cargo manifests, and operational communications are all potential targets.
The maritime sector also works with long-lived systems: a ship has a lifespan of twenty to thirty years. Security systems installed today must therefore be able to withstand quantum attacks well into the future. This makes future-proof encryption a logical choice during new builds and refits.
Ports and shipping companies that protect sensitive trade data with quantum-safe solutions reduce their risk of economic damage from data theft or sabotage.
8: Data centers and cloud providers
Data centers store the data of hundreds or thousands of customers simultaneously. A vulnerability in a data center’s encryption does not affect just one organization. It affects an entire ecosystem of businesses and users. Cloud providers therefore carry an extraordinary responsibility for securing the data entrusted to them.
The transition to quantum-safe encryption also presents an operational challenge for data centers: systems must be updated without compromising availability. Encryption solutions that integrate seamlessly into existing infrastructure are essential for this.
Data centers that can demonstrably prove quantum-proof security stand out in a market where trust and compliance carry ever greater weight.
9: Education and research institutions
Universities and research institutions work with intellectual property, research data, and collaborations that represent significant economic and strategic value. Scientific breakthroughs, patents, and innovative technologies are attractive targets for espionage.
Educational institutions often have open network structures designed for collaboration and accessibility. This makes security more complex, but no less urgent. Research data intercepted today can be strategically exploited tomorrow.
Institutions that collaborate with government or defense agencies face additional risk and are often already subject to strict network security requirements.
10: Industrial manufacturing and smart factories
Smart factories and industrial production environments are increasingly connected through industrial IoT networks. Machines communicate with control systems, production data flows to central platforms, and maintenance is performed remotely. All of these connections are potential attack vectors.
The risk is not limited to the theft of production secrets. It also includes sabotage of production processes. An attacker who gains access to an industrial network can misdirect machines, cause quality failures, or bring production to a halt.
Quantum security in industry means encrypting machine data and communications, but also ensuring reliable time synchronization for processes that depend on precise timing.
11: Critical public infrastructure
Bridges, locks, traffic systems, drinking water facilities, and wastewater treatment plants all fall under critical public infrastructure. These systems are increasingly managed and monitored remotely via digital networks. While this brings efficiency benefits, it also introduces security risks.
An attack on critical public infrastructure has direct consequences for public safety and the daily lives of citizens. The political and societal impact of such an attack makes this sector a priority target for state-sponsored actors.
Quantum-proof security for public infrastructure is therefore not only a technical challenge, but also a societal responsibility for operators and governments alike.
How do you get started with quantum-proof security?
The transition to post-quantum encryption may seem overwhelming, but you don’t have to do everything at once. A structured approach makes it manageable:
- Map your current encryption. Which systems use RSA or elliptic curve cryptography? Those are your vulnerable points.
- Identify your highest risks. Which data has the longest retention period? Which systems are most critical to your operations?
- Choose layer 1 and layer 2 encryption. Security at the deepest levels of the network provides protection regardless of which protocols run above it.
- Plan a phased migration. Replace encryption step by step, starting with your most sensitive systems.
- Work with specialists. Quantum security is a field that requires deep technical expertise.
It is also wise to choose solutions that are crypto-agile now: systems that can be easily updated to new encryption standards as they become available.
How we help with quantum-proof network security
We understand that quantum security is new territory for many organizations. With more than 20 years of experience in network infrastructure and in-depth expertise in layer 1 and layer 2 security, we help organizations across all of the sectors mentioned above transition to future-proof network security.
What we offer:
- Quantum security solutions that protect at the deepest level of your network, before data reaches higher-layer protocols
- Layer 1 and layer 2 encryption for maximum protection of fiber-optic and Ethernet connections
- Vendor-independent advice based on your specific situation, with solutions from partners including Nokia, Cisco, and Huawei
- End-to-end support from consulting and design through to implementation and management
- Sector-specific approach for transportation, maritime, healthcare, data centers, government, and more
Want to know how vulnerable your current network security is to quantum threats? Contact us for a no-obligation conversation. We are happy to help you make the right choices for a network that stays secure well into the future.
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Explore our solutions or get in touch with one of our experts directly.
