Cybersecurity Tech Brief By HackerNoon

HackerNoon

Learn the latest Cybersecurity updates in the tech world.

  1. 4h ago

    Nations Compete to Control AI’s Pathways to Power

    This story was originally published on HackerNoon at: https://hackernoon.com/nations-compete-to-control-ais-pathways-to-power. AI governance is shifting from models to the infrastructure, energy, chips and security systems that convert artificial intelligence into usable power. Check more stories related to cybersecurity at: https://hackernoon.com/c/cybersecurity. You can also check exclusive content about #cybersecurity, #finance, #leadership, #legal, #machine-learning, #software-development, #ai-infrastructure, #ai-supercomputer, and more. This story was written by: @ttassos. Learn more about this writer by checking @ttassos's about page, and for more stories, please visit hackernoon.com. AI governance is shifting from models to the infrastructure, energy, chips and security systems that convert artificial intelligence into usable power.

    Nations Compete to Control AI’s Pathways to Power

  2. 4h ago

    When PowerShell Said "Failed," tcpdump Said Why

    This story was originally published on HackerNoon at: https://hackernoon.com/when-powershell-said-failed-tcpdump-said-why. A failed PowerShell download, a missing packet, and the tcpdump commands that proved where the connection really died — host firewall, not the attacker. Check more stories related to cybersecurity at: https://hackernoon.com/c/cybersecurity. You can also check exclusive content about #cybersecurity, #tcpdump, #network-forensics, #threat-hunting, #incident-response, #packet-analysis, #infosec, #blue-team, and more. This story was written by: @RoshanRajbanshi_frqj97tc. Learn more about this writer by checking @RoshanRajbanshi_frqj97tc's about page, and for more stories, please visit hackernoon.com. A malicious PowerShell script on a compromised app server tried to download a second-stage payload and failed — but the error message couldn't say whether the attacker's server refused it, a firewall blocked it, or it never left the host. Four tcpdump commands settled it: the request never reached the network at all. This piece walks through the core tcpdump syntax (reading captures, payload inspection, host/port filtering, TCP flag matching) using a clean sample file, then applies it to a real incident-response case to show why packet-level visibility catches things host logs structurally can't.

    When PowerShell Said "Failed," tcpdump Said Why

  3. 1d ago

    Two-Thirds of the Top Million Domains Can Still Be Spoofed

    This story was originally published on HackerNoon at: https://hackernoon.com/two-thirds-of-the-top-million-domains-can-still-be-spoofed. Daily DNS scans of the Tranco top-1M show 67% of mail-receiving domains have no enforced DMARC policy — and the enforcement share keeps falling. Check more stories related to cybersecurity at: https://hackernoon.com/c/cybersecurity. You can also check exclusive content about #email-security, #dmarc, #cybersecurity, #dns, #data-analysis, #email-spoofing, #dns-security, #cybersecurity-research, and more. This story was written by: @artem-berezin. Learn more about this writer by checking @artem-berezin's about page, and for more stories, please visit hackernoon.com. We analysed daily DNS snapshots of the Tranco top-1M. Of 659,259 mail-receiving domains, 67.4% publish no enforced DMARC policy, ~96,000 run "monitoring mode" that reports to no one, and the enforcement share is declining — a side effect of the 2024–2025 bulk-sender mandates that made p=none the ceiling.

    Two-Thirds of the Top Million Domains Can Still Be Spoofed

  4. 1d ago

    The $2 Trillion Compliance Problem: Why Regulated Industries Need a Unified AI Approach

    This story was originally published on HackerNoon at: https://hackernoon.com/the-$2-trillion-compliance-problem-why-regulated-industries-need-a-unified-ai-approach. AI will not fix compliance with keyword lists. The real opportunity is reusable infrastructure across regulated industries. Check more stories related to cybersecurity at: https://hackernoon.com/c/cybersecurity. You can also check exclusive content about #compliance, #dynamic-data-regluation, #regulatory-compliance, #regtech, #compliance-automation, #governance-risk-compliance, #natural-language-processing, #hackernoon-top-story, and more. This story was written by: @booyokkk. Learn more about this writer by checking @booyokkk's about page, and for more stories, please visit hackernoon.com. The U.S. spends $2.15 trillion a year on regulatory compliance, and after years of building compliance systems, I think I know why: every regulated industry rebuilds the same infrastructure from scratch. Finance, healthcare, and corporate communications all solve an identical problem (messy data in, rules applied, audit trail out) with completely separate tools, while 77% of compliance teams still work manually. The fix is three shared layers: a universal data pipeline, a context-aware analysis engine, and a regulatory change tracker. Nobody has built them as one platform because vendors organize by vertical, not by problem. I'm working on changing that, and I have a prototype running rules from four unrelated regulatory domains through a single engine.

    The $2 Trillion Compliance Problem: Why Regulated Industries Need a Unified AI Approach

  5. 2d ago

    AI Agents & Non-Human Identities: Why They Must Be IAM Users

    This story was originally published on HackerNoon at: https://hackernoon.com/ai-agents-and-non-human-identities-why-they-must-be-iam-users. AI agents and non-human identities must exist as first-class IAM users before they act. Start with auditability, access review, and governance in your IAM. Check more stories related to cybersecurity at: https://hackernoon.com/c/cybersecurity. You can also check exclusive content about #identity-and-access-management, #non-human-identity, #enterprise-security, #autonomous-ai-agent-identity, #machine-identity-management, #enterprise-iam-for-ai-agents, #ai-access-governance, #agentic-ai-security, and more. This story was written by: @sebastianmartinez. Learn more about this writer by checking @sebastianmartinez's about page, and for more stories, please visit hackernoon.com. AI agents should not run on secrets, tokens, shared service accounts, or borrowed human sessions. If they can access systems, interpret context, select tools, and trigger actions, they need stable, visible identities in IAM. Start simple: create directory users for meaningful agents, classify them as “Agent”, apply governance groups such as human-supervised or high-privilege, and govern them before they act.

    AI Agents & Non-Human Identities: Why They Must Be IAM Users

  6. 2d ago

    Cell Services vs LoRa Mesh: When Do You Actually Need Off-Grid Comms?

    This story was originally published on HackerNoon at: https://hackernoon.com/cell-services-vs-lora-mesh-when-do-you-actually-need-off-grid-comms. Cellular wins for everyday communication. Mesh wins when coverage disappears, networks overload, or groups need off-grid coordination. Check more stories related to cybersecurity at: https://hackernoon.com/c/cybersecurity. You can also check exclusive content about #disaster-recovery-plan, #temporal-dead-zone, #meshtastic, #lora, #off-grid-communication, #mesh-networking, #disaster-preparedness, #resilient-communications, and more. This story was written by: @MeshMarine. Learn more about this writer by checking @MeshMarine's about page, and for more stories, please visit hackernoon.com. Cellular wins for everyday communication. Mesh wins when coverage disappears, networks overload, or groups need off-grid coordination.

    Cell Services vs LoRa Mesh: When Do You Actually Need Off-Grid Comms?

  7. 4d ago

    Post-Quantum Migration Is Not a Library Upgrade, It Is a Distributed Systems Problem

    This story was originally published on HackerNoon at: https://hackernoon.com/post-quantum-migration-is-not-a-library-upgrade-it-is-a-distributed-systems-problem. Learn why post-quantum migration is a cloud architecture challenge, not just a cryptography upgrade, and how crypto agility enables safe enterprise adoption. Check more stories related to cybersecurity at: https://hackernoon.com/c/cybersecurity. You can also check exclusive content about #post-quantum-cryptography, #cyber-security-awareness, #cloud-native-crypto-agility, #kubernetes-crypto-agility, #cryptographic-dependency-graph, #cloud-native-pqc-architecture, #post-quantum-tls-migration, #cryptography-bill-of-materials, 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. Replacing RSA or elliptic-curve cryptography in one application library does not make a cloud-native system quantum-ready. Cryptography is spread across gateways, service meshes, certificates, workload identities, cloud KMS, CI/CD signing, and vendor-managed services. The real job is to discover those dependencies, rank them by risk, move algorithm choices behind policy, roll out hybrid or post-quantum modes progressively, measure production behavior, and retire legacy algorithms with evidence.

    Post-Quantum Migration Is Not a Library Upgrade, It Is a Distributed Systems Problem

  8. 5d ago

    Social Engineering Attempts Via LinkedIn Messaging: How to Stay Safe

    This story was originally published on HackerNoon at: https://hackernoon.com/social-engineering-attempts-via-linkedin-messaging-how-to-stay-safe. If someone you just met on LinkedIn wants you to share your screen and install software, assume it's malicious until proven otherwise. Check more stories related to cybersecurity at: https://hackernoon.com/c/cybersecurity. You can also check exclusive content about #phishing, #phising-attacks, #social-engineering, #cybersecurity, #linkedin, #social-media-hacking, #cybersecurity-tips, #cybersecurity-awareness, and more. This story was written by: @chribonn. Learn more about this writer by checking @chribonn's about page, and for more stories, please visit hackernoon.com. I participated in a LinkedIn-based social engineering attempt The playbook: ✅ LinkedIn message ✅ Calendly meeting invite ✅ No camera ("technical issue") ✅ Gmail account, not corporate email ✅ Request to share your screen ✅ Excessive praise regardless of your answers ✅ Links to external sites + requests to install software When I challenged the scam and said I'd write about it, the call ended immediately. Stay vigilant.

    Social Engineering Attempts Via LinkedIn Messaging: How to Stay Safe
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Learn the latest Cybersecurity updates in the tech world.

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