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Where adaptability meets advantage

At TCS, we don’t just help businesses transform. We help them become perpetually adaptive enterprises, built to evolve continuously and confidently in a world of constant change.

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    What we do

    Where adaptability meets advantage

    At TCS, we don’t just help businesses transform. We help them become perpetually adaptive enterprises, built to evolve continuously and confidently in a world of constant change.

    Adaptability starts here
    • Industries
    • Services
    • Products and Platforms
    • Research & Innovation
    • Alliances
    • Banking
    • Capital Markets
    • Consumer Packaged Goods and Distribution
    • Communications, Media, and Information Services
    • Education
    • Energy, Resources, and Utilities
    • Healthcare
    • High Tech
    • Insurance
    • Life Sciences
    • Manufacturing
    • Public Services
    • Retail
    • Travel and Logistics
    • Artificial Intelligence and Data & Analytics
    • Cloud
    • Cognitive Business Operations
    • Consulting
    • Cybersecurity
    • Enterprise Solutions
    • IoT and Digital Engineering
    • Network Solutions and Services
    • TCS Interactive
    • Sustainability Services
    • TCS ADD™
    • TCS BANCS™
    • TCS BFSI Platforms
    • TCS CHROMA™
    • TCS Customer Intelligence & Insights™
    • TCS ERP on Cloud
    • ignio™
    • TCS iON™
    • TCS HOBS™
    • TCS Intelligent Urban Exchange™
    • TCS OmniStore™
    • TCS Optumera™
    • TCS Tap™
    • Quartz™ – The Smart Ledgers™
    • TCS TwinX™
    • TCS MasterCraft™
    • Jile™
    • TCS DigiBOLT™
    • TCS AI WisdomNext™
    • TCS Research
    • TCS Pace™
    Where adaptability meets advantage
  • Industries expand here
    • Banking
    • Capital Markets
    • Consumer Packaged Goods and Distribution
    • Communications, Media, and Information Services
    • Education
    • Energy, Resources, and Utilities
    • Healthcare
    • High Tech
    • Insurance
    • Life Sciences
    • Manufacturing
    • Public Services
    • Retail
    • Travel and Logistics
  • Services expand here
    • Artificial Intelligence and Data & Analytics
    • Cloud
    • Cognitive Business Operations
    • Consulting
    • Cybersecurity
    • Enterprise Solutions
    • IoT and Digital Engineering
    • Network Solutions and Services
    • TCS Interactive
    • Sustainability Services
  • Products and Platforms expand here
    • TCS ADD™
    • TCS BANCS™
    • TCS BFSI Platforms
    • TCS CHROMA™
    • TCS Customer Intelligence & Insights™
    • TCS ERP on Cloud
    • ignio™
    • TCS iON™
    • TCS HOBS™
    • TCS Intelligent Urban Exchange™
    • TCS OmniStore™
    • TCS Optumera™
    • TCS Tap™
    • Quartz™ – The Smart Ledgers™
    • TCS TwinX™
    • TCS MasterCraft™
    • Jile™
    • TCS DigiBOLT™
    • TCS AI WisdomNext™
  • Research & Innovation expand here
    • TCS Research
    • TCS Pace™
  • Alliances
  • Who we are

    We deliver excellence and create value for customers and communities.

    Our expert, committed team put our shared values into action – every day. With the best talent and the latest technology we help customers turn complexity into opportunities and create meaningful change.

    Discover the difference
    • Brand
    • Leadership
    • Community
    • Sustainability
    • Inclusion
    • Values
    We deliver excellence and create value for customers and communities.
  • Brand
  • Leadership
  • Community
  • Sustainability
  • Inclusion
  • Values
  • Insights

    Discover why customers choose TCS

    We are a digital transformation and technology partner of choice for industry-leading organizations worldwide.

    Read our customer success stories.
    • Events
    • Analyst Recognition
    • Global Studies

    Upcoming events

    27 Dec 2025 TCS at Guidewire Connections 2025
    01 Dec 2025 TCS at AWS re:Invent 2025
    18 Nov 2025 TCS is a Gamechanger Sponsor of Microsoft Ignite 2025
    View all

    Recent recognitions

    15 Oct 2025 From Technical Liability to Digital Dominance: Plaza Premium Group’s Bold Transformation
    06 Oct 2025 Unlocking the Future: 6G & AI for Telcos
    18 Sep 2025 Emirates NBD Transforms Payments and Reengineers Banking Operations
    View all
    Discover why customers choose TCS
  • Events
  • Analyst Recognition
  • Global Studies
  • Careers

    Want to be a global change-maker? Join our team.

    At TCS, we believe exceptional work begins with hiring, celebrating and nurturing the best people — from all walks of life.

    Join us
    • India
    • Americas
    • Asia Pacific
    • Europe and UK
    • Middle East and Africa
    • India
    • Argentina
    • Brazil
    • Canada
    • Chile
    • Colombia
    • Ecuador
    • Mexico
    • Peru
    • Uruguay
    • USA
    • Australia
    • Mainland China
    • Hong Kong SAR
    • Indonesia
    • Japan
    • Malaysia
    • New Zealand
    • Philippines
    • Republic of Korea
    • Singapore
    • Chinese Taipei
    • Thailand
    • Belgium
    • Denmark
    • Estonia
    • Finland
    • France
    • Germany
    • Hungary
    • Ireland
    • Italy
    • Luxembourg
    • Netherlands
    • Norway
    • Poland
    • Portugal
    • Spain
    • Sweden
    • Switzerland
    • United Kingdom
    • Bahrain
    • Israel
    • Kuwait
    • Qatar
    • Saudi Arabia
    • South Africa
    • United Arab Emirates
    Want to be a global change-maker? Join our team.
  • India expand here
    • India
  • Americas expand here
    • Argentina
    • Brazil
    • Canada
    • Chile
    • Colombia
    • Ecuador
    • Mexico
    • Peru
    • Uruguay
    • USA
  • Asia Pacific expand here
    • Australia
    • Mainland China
    • Hong Kong SAR
    • Indonesia
    • Japan
    • Malaysia
    • New Zealand
    • Philippines
    • Republic of Korea
    • Singapore
    • Chinese Taipei
    • Thailand
  • Europe and UK expand here
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    • Denmark
    • Estonia
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    • France
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    • Hungary
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    • Bahrain
    • Israel
    • Kuwait
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  • Newsroom

    Find the latest news about TCS

    Stay up-to-date on all press announcements by TCS

    Discover more
    • News Alerts
    • Media Kit

    Recent News

    16 Oct 2025 NCVET Selected TCS to Develop a Portal Aimed at Democratizing the Vocational Skill Development Ecosystem in India
    16 Oct 2025 TCS and Infineon Partner to Redefine Digital Experience and Accelerate Sales Growth
    01 Sep 2025 TCS Brings the Power of AI to the TCS Sydney Marathon as it Celebrates First Year as Abbott World Marathon Major
    View all
    Find the latest news about TCS
  • News Alerts
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  • Investors

    Tata Consultancy Services Limited
    NSE:TCS
    INR
    Discover more Q1FY26 Debrief
    • Management Commentary
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    • Cybersecurity
    • Article

    Quantum-safe VPN to safeguard encrypted data

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    We have sent you a copy of the report to your email again.

    Highlights

    • Post quantum cryptography (PQC), a network security mechanism, is used in VPNs to increase encryption levels.
    • It is crucial to encrypt your data and use a VPN while working with sensitive data.

    In this article

    growing concern   inpage
    what is PQC?   inpage
    The need   inpage
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    Growing concerns

    Adopting new ways to combat breach

    The concern is growing within the corporate world as to whether current widely used encryption techniques can survive the onslaught of powerful quantum computers in the future. If current cryptographic techniques become obsolete, companies must adopt new technologies, and a seamless transition occurs. 

    In the future, quantum computers will be able to decode these scrambled data and then use them for their own purpose. For security, a quantum-safe VPN is introduced to safeguard the data sent and received via the virtual private network.

    In this blog, we will discuss a quantum-safe VPN.

     

    Understanding Post Quantum Cryptography

    What is Quantum-Safe VPN, and how useful is it?

    A quantum-safe VPN is a network security measure that uses Post Quantum Cryptography (PQC) to enhance encryption levels. PQC uses unique algorithms to encode data, which makes it more difficult for quantum computers to break encryption. A quantum-safe VPN can create an encrypted tunnel between the sender and receiver. Thus, it will safeguard the data.

    A quantum-safe VPN creates a higher level of protection by utilizing the critical exchange security mechanisms of the session or cryptographic ciphers. In other words, it makes it more difficult for hackers to decrypt data in the future.

    Even though quantum computing could break the encryption we use to protect our data, that doesn't mean encryption is useless. Encrypting your data and using a VPN when dealing with sensitive information is still essential. The encrypted data that seems useful now might not have a value later. So, even if the current encryption standards become obsolete, you may not have much to worry about.

    The need, today

    Why does one need a Quantum-Safe VPN?

    With data security- no wonder how many encryption layers you have, somebody will eventually find a way to breach it. This is where VPNs come into play. They don't offer impenetrable security, making it much harder for would-be attackers to intercept and read your data. Even if they can acquire encrypted data, they wouldn't be able to do anything with it unless they had the key for decrypting it. However, hackers could potentially wait for quantum computers to support them unlock the data. This would give them access to a lot of confidential data.

    Exemplification

    Recent Developments and cases to corroborate

    On April 6, 2021, the Phio TX Model D was launched. This edge device uses quantum-safe out-of-band key delivery technology to create quantum-safe VPNs. These VPNs are designed for smaller locations and deployments.

    Also, big networks that want to test quantum-safe solutions can use this economic-friendly solution. This solution provides security for data that is moving today, and it is a future-proof solution for the threat of quantum computing.

    During a trial recently, Verizon tested a quantum-safe VPN to see if it could replace existing public key encryption procedures. The test was conducted by exchanging ciphers or keys between two of the private 5G networks that are located in Verizon's 5G Lab at London and its executive briefing center, which is present in Ashburn, Virginia. The trial results showed that adopting PQC early could prepare today's data from tomorrow's attacks.

    Below mentioned are a few use cases of quantum-safe VPN:

    1. Enterprise security: Quantum-safe VPN is perfect for securing your enterprise network, whether it's on-premises or remote. With Quantum-safe VPN, you can connect to any number of locations securely and efficiently.

    2. Ship-to-shore security: Data security during long-distance transit is crucial, and quantum-safe VPNs provide an extra layer of protection. These VPNs make it virtually impossible for hackers to access sensitive information.

    3. Watchtower communication security: A quantum-safe VPN can be used for voice and video communications with watchtowers. This type of VPN is more secure than traditional VPNs and can help keep your communications confidential.

    4. Premises security: To avoid any risks of leaks, it's crucial to have a secure network on campus. One way to do this is to use quantum mobility in WiFi, LiFi, and other platforms. This will help keep your information safe and sound.

    Quantum-safe VPN is the future of secure encrypted data transfer. While this technology is still in its infancy, it is growing fast and is definitely something to keep an eye on in the future.

     

    This solution provides security for data that is moving today, and it is a future-proof solution for the threat of quantum computing.

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