Quantum computing could undermine widely used public-key encryption, driving research into quantum-resistant algorithms and secure migration planning.
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Background for this topic.
Quantum computing uses quantum-mechanical effects in qubits to solve some problems differently from conventional computers. In information security, its significance is primarily cryptographic: a sufficiently capable, fault-tolerant quantum computer could use Shor’s algorithm to break RSA and elliptic-curve cryptography, which protect certificates, key exchanges, signatures, and encrypted archives. Quantum computing is not expected to break all cryptography equally; symmetric encryption and cryptographic hashes generally require larger security parameters rather than replacement for the same reason.
The practical concern is “harvest now, decrypt later”: adversaries can collect encrypted traffic today for future decryption, especially when data must remain confidential for years. Organizations should inventory public-key algorithms and long-lived sensitive data, assess dependencies such as certificates and protocols, and plan migration to standardized post-quantum cryptography with crypto-agile systems. Quantum key distribution is a separate, specialized communications approach; it does not replace endpoint security, authentication, or conventional key-management controls and has significant deployment constraints.
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Microsoft on Tuesday said it's accelerating its quantum safe security roadmap, stating technology advances in quantum computing are making it essential to replace existing encryption standards sooner than previously expected
Today’s encrypted data, such as credentials, may no longer remain confidential in the future because the public-key cryptography protecting it will soon be broken by quantum computers. Although no machine today can break elliptic curve cryptography or RSA, quantum hardware is advancing rapidly and will inevitably change how organizations protect their data. Ciphertext and credentials captured by
President Trump signed an executive order on June 22 setting hard deadlines for federal agencies to move high-value assets and high-impact systems to post-quantum cryptography
Most organizations assume encrypted data is safe
Google has announced a new program in its Chrome browser to ensure that HTTPS certificates are secure against the future risk posed by quantum computers
Old Playbook, New Scale: While defenders are chasing trends, attackers are optimizing the basics The security industry loves talking about "new" threats. AI-powered attacks. Quantum-resistant encryption. Zero-trust architectures. But looking around, it seems like the most effective attacks in 2025 are pretty much the same as they were in 2015. Attackers are exploiting the same entry points that
Quantum computing and AI working together will bring incredible opportunities. Together, the technologies will help us extend innovation further and faster than ever before. But, imagine the flip side, waking up to news that hackers have used a quantum computer to crack your company's encryption overnight, exposing your most sensitive data, rendering much of it untrustworthy
Google Cloud has announced quantum-safe digital signatures in Google Cloud Key Management Service (Cloud KMS) for software-based keys as a way to bulletproof encryption systems against the threat posed by cryptographically-relevant quantum computers
Google has announced that it will be switching from KYBER to ML-KEM in its Chrome web browser as part of its ongoing efforts to defend against the risk posed by cryptographically relevant quantum computers (CRQCs)
Check Point is warning of a zero-day vulnerability in its Network Security gateway products that threat actors have exploited in the wild
Popular enterprise services provider Zoom has announced the rollout of post-quantum end-to-end encryption (E2EE) for Zoom Meetings, with support for Zoom Phone and Zoom Rooms coming in the future
Apple has announced a new post-quantum cryptographic protocol called PQ3 that it said will be integrated into iMessage to secure the messaging platform against future attacks arising from the threat of a practical quantum computer
ChatGPT has transformed the way businesses generate textual content, which can potentially result in a quantum leap in productivity. However, Generative AI innovation also introduces a new dimension of data exposure risk, when employees inadvertently type or paste sensitive business data into ChatGPT, or similar applications. DLP solutions, the go-to solution for similar challenges, are
The U.S. Federal Bureau of Investigation (FBI) is warning of a new trend of dual ransomware attacks targeting the same victims, at least since July 2023
Most people are barely thinking about basic cybersecurity, let alone post-quantum cryptography. But the impact of a post-quantum world is coming for them regardless of whether or not it's keeping them up tonight. Today, many rely on encryption in their daily lives to protect their fundamental digital privacy and security, whether for messaging friends and family, storing files and photos, or
Encrypted messaging app Signal has announced an update to the Signal Protocol to add support for quantum resistance by upgrading the Extended Triple Diffie-Hellman (X3DH) specification to Post-Quantum Extended Diffie-Hellman (PQXDH)
Google on Tuesday announced the first quantum resilient FIDO2 security key implementation as part of its OpenSK security keys initiative
Google has announced plans to add support for quantum-resistant encryption algorithms in its Chrome browser, starting with version 116
A group of researchers has revealed what it says is a vulnerability in a specific implementation of CRYSTALS-Kyber, one of the encryption algorithms chosen by the U.S. government as quantum-resistant last year
A recently discovered malware builder called Quantum Builder is being used to deliver the Agent Tesla remote access trojan (RAT)