Cybersecurity Tech Brief By HackerNoon

Cybersecurity Tech Brief By HackerNoon

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Cybersecurity Tech Brief By HackerNoon episodes

  • Businesses Always Have Messy Emails (Part 2)

    This story was originally published on HackerNoon at: https://hackernoon.com/businesses-always-have-messy-emails-part-2.


    Security isn't a product you buy once. It's a process.
    Because at the end of the day, most security incidents don't start with sophisticated hackers.
    Check more stories related to cybersecurity at: https://hackernoon.com/c/cybersecurity.
    You can also check exclusive content about #cybersecurity, #emails, #email-marketing, #newsletter, #businesses-have-messy-emails, #web-monetization, #data-security, #phishing, and more.


    This story was written by: @arthurtkachenko-rm2m8. Learn more about this writer by checking @arthurtkachenko-rm2m8's about page,
    and for more stories, please visit hackernoon.com.


    Cross-team collaboration introduces additional complexity, and the volume of information being shared grows rapidly. Managing access rights, protecting customer information, and preventing accidental data exposure become increasingly difficult.

    7 min
  • Two-Factor Authentication: Because Apparently One Password Wasn't Annoying Enough

    This story was originally published on HackerNoon at: https://hackernoon.com/two-factor-authentication-because-apparently-one-password-wasnt-annoying-enough.


    Two-factor authentication was supposed to make our lives online safer because apparently one password wasn't annoying enough
    Check more stories related to cybersecurity at: https://hackernoon.com/c/cybersecurity.
    You can also check exclusive content about #password-security, #passwords, #mfa-fatigue, #account-security, #digital-identity, #authentication-design, #cybersecurity-ux, #login-friction, and more.


    This story was written by: @technologynews. Learn more about this writer by checking @technologynews's about page,
    and for more stories, please visit hackernoon.com.


    Enter your password, prove you have your phone, and you're in. Unfortunately, technology has never been particularly good at leaving simple things alone.

    6 min
  • How Mailing Lists Break DMARC, and Why ARC Only Partly Fixes It

    This story was originally published on HackerNoon at: https://hackernoon.com/how-mailing-lists-break-dmarc-and-why-arc-only-partly-fixes-it.


    Why mailing lists break DMARC, what ARC (RFC 8617) actually does about it, why it only helps where the receiver trusts the sealer, and why From-munging is the reliable fix.
    Check more stories related to cybersecurity at: https://hackernoon.com/c/cybersecurity.
    You can also check exclusive content about #email-authentication, #dmarc, #dkim, #mailing-list-management, #email-deliverability, #dmarc-alignment, #mailing-lists-vs-dmarc, #mailing-list-security, and more.


    This story was written by: @vadimivanov. Learn more about this writer by checking @vadimivanov's about page,
    and for more stories, please visit hackernoon.com.


    Mailing lists break DMARC because they modify messages and forward from their own servers. ARC lets a list vouch that the message passed DMARC before it touched it, but only helps at receivers that evaluate it and trust the sealer's reputation. From-munging is the universal fix; run both.

    6 min
  • Content Security Policy Report-Only: How to Collect and Analyze CSP Violation Reports

    This story was originally published on HackerNoon at: https://hackernoon.com/content-security-policy-report-only-how-to-collect-and-analyze-csp-violation-reports.


    Learn how to use CSP Report-Only safely: secure the reporting endpoint, normalize and group violations, fix issues, and enforce your policy with confidence.
    Check more stories related to cybersecurity at: https://hackernoon.com/c/cybersecurity.
    You can also check exclusive content about #content-security-policy, #reporting-api, #csp-report-only-mode, #reporting-api-csp, #csp-policy-enforcement, #csp-violation-reports, #report-to-versus-report-uri, #csp-reporting, and more.


    This story was written by: @darevskaya. Learn more about this writer by checking @darevskaya's about page,
    and for more stories, please visit hackernoon.com.


    CSP Report-Only mode helps you discover what a new policy would break before enforcing it on real users. But collecting reports is not enough: you must secure the public reporting endpoint, validate and sanitize its data, and group related violations so you can separate real application problems from noise and decide what to fix before enforcement.

    13 min
  • Post-Quantum TLS for Cloud APIs and Microservices

    This story was originally published on HackerNoon at: https://hackernoon.com/post-quantum-tls-for-cloud-apis-and-microservices.


    Learn how to migrate cloud TLS to X25519MLKEM768 by treating every TLS termination as a separate boundary, with telemetry, fallback controls, and rollout gates.
    Check more stories related to cybersecurity at: https://hackernoon.com/c/cybersecurity.
    You can also check exclusive content about #post-quantum-cryptography, #tls-handshake, #quantum-cryptography, #quantum-computation, #post-quantum-tls-migration, #mtls-service-mesh, #hybrid-tls-cloud-exchange-key, #hackernoon-top-story, and more.


    This story was written by: @nikhil2997. Learn more about this writer by checking @nikhil2997's about page,
    and for more stories, please visit hackernoon.com.


    Hybrid post-quantum TLS is not a single application switch—every gateway, proxy, load balancer, and service connection must be migrated and verified independently. X25519MLKEM768 adds manageable CPU cost but substantially increases handshake size, making connection reuse, compatibility testing, telemetry, explicit policies, and reversible rollout gates essential.

    17 min
  • How to Implement Micro-Segmentation in K8s Using Cilium Network Policies

    This story was originally published on HackerNoon at: https://hackernoon.com/how-to-implement-micro-segmentation-in-k8s-using-cilium-network-policies.


    How to implement robust micro-segmentation in Kubernetes environments utilizing Cilium and eBPF
    Check more stories related to cybersecurity at: https://hackernoon.com/c/cybersecurity.
    You can also check exclusive content about #micro-segmentation, #k8s, #cilium, #kubernetes, #zero-trust-knowledge, #ebpf, #cilium-network, #kubernetes-guide, and more.


    This story was written by: @anasrhimi. Learn more about this writer by checking @anasrhimi's about page,
    and for more stories, please visit hackernoon.com.


    By defaulting to a deny-all posture and explicitly allowing via CNPs, you establish a resilient micro-segmented architecture where blast radii are strictly contained.

    3 min
  • How to Make Your Repository Ready for AI Coding Agents

    This story was originally published on HackerNoon at: https://hackernoon.com/how-to-make-your-repository-ready-for-ai-coding-agents.


    Learn how deterministic CI, single-gate tooling, AGENTS.md checks, fast tests, and security rules make repositories safer for AI coding agents.
    Check more stories related to cybersecurity at: https://hackernoon.com/c/cybersecurity.
    You can also check exclusive content about #cybersecurity, #databases, #git, #artificial-intelligence, #data-science, #finance, #ai-coding-agents, #ai-agent-tooling, and more.


    This story was written by: @fmind. Learn more about this writer by checking @fmind's about page,
    and for more stories, please visit hackernoon.com.


    Learn how deterministic CI, single-gate tooling, AGENTS.md checks, fast tests, and security rules make repositories safer for AI coding agents.

    8 min
  • Reclaim Security Names Stephen Wadsworth VP of Sales as Cybersecurity Shifts From Exposure Discovery

    This story was originally published on HackerNoon at: https://hackernoon.com/reclaim-security-names-stephen-wadsworth-vp-of-sales-as-cybersecurity-shifts-from-exposure-discovery.



    Check more stories related to cybersecurity at: https://hackernoon.com/c/cybersecurity.
    You can also check exclusive content about #cybersecurity, #cyber-threats, #personal-data-exposure, #cyberthreats, #security, #cyber-security, #ciso, #ciso-insights, and more.


    This story was written by: @ruth-hasson. Learn more about this writer by checking @ruth-hasson's about page,
    and for more stories, please visit hackernoon.com.

    6 min
  • Bridges Are Crypto's Weakest Point - Incident Response Is the Real Test

    This story was originally published on HackerNoon at: https://hackernoon.com/bridges-are-cryptos-weakest-point-incident-response-is-the-real-test.


    Crypto bridges remain a major security risk. Here’s why incident response, preparation and transparency matter when a bridge exploit happens.
    Check more stories related to cybersecurity at: https://hackernoon.com/c/cybersecurity.
    You can also check exclusive content about #cybersecurity, #crypto-security, #crypto-bridges, #crypto-bridge-hacks, #cybersecurity-awareness, #cyber-attack, #crypto-attacks, #bridge-exploits, and more.


    This story was written by: @louistsu. Learn more about this writer by checking @louistsu's about page,
    and for more stories, please visit hackernoon.com.


    Crypto bridges concentrate significant risk in a single verification layer, making them attractive targets for attackers. Major exploits such as Ronin, Wormhole and Nomad exposed different technical weaknesses but shared the same structural problem: attackers convinced a bridge that assets existed when they did not. Audits remain essential, but security also depends on key management, monitoring and operational discipline. When an incident happens, four things matter most: speed, precise scope, verified information and preparation. The teams that demonstrate discipline in the first 48 hours are the ones that earn long-term trust.

    6 min
  • 24 Billion Stolen Passwords in One Database: Inside the Industrial Infostealer Economy

    This story was originally published on HackerNoon at: https://hackernoon.com/24-billion-stolen-passwords-in-one-database-inside-the-industrial-infostealer-economy.


    A single exposed database held 24 billion stolen credentials — how the infostealer economy industrialized account takeover, and how to defend.
    Check more stories related to cybersecurity at: https://hackernoon.com/c/cybersecurity.
    You can also check exclusive content about #cybersecurity, #password-security, #credential-stuffing, #infostealer, #data-breaches, #cybersecurity-awareness, #cyber-threats, #password-breached, and more.


    This story was written by: @nickmarsteller. Learn more about this writer by checking @nickmarsteller's about page,
    and for more stories, please visit hackernoon.com.


    Researchers discovered an exposed database containing 24 billion stolen credentials aggregated from infostealer malware, historic breaches, and cybercriminal infrastructure.

    7 min

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