Threat Intelligence Blog
Research, insights, and updates from the isMalicious team.
CISA KEV Adds Cisco, Chrome, And Arista Flaws: How To Prioritize Active Exploitation
CISA added Cisco SD-WAN, Google Chromium V8, and Arista EOS vulnerabilities to KEV in June 2026. Here is how SOC and vulnerability teams should turn that signal into action.
YellowKey and BitLocker Bypass: How Security Teams Should Re-Baseline Stolen-Device Risk
YellowKey made a quiet assumption loud again: encrypted endpoints still need vulnerability intelligence, asset context, and incident workflows. Here is how to respond when a last-resort control becomes a live risk.
CVE Watch : transformer le catalogue mondial en findings exploitables pour votre périmètre
Le catalogue CVE global n’est utile que s’il devient local : périmètres, CPE, findings, statuts, export et suivi de remédiation.
PoC, Exploit-DB et Nuclei : comment utiliser les signaux exploit sans perdre le contrôle
Les preuves de concept et templates publics changent la priorité CVE, mais doivent être utilisés comme signaux défensifs, pas comme raccourcis risqués.
CERT-FR, MSRC, GHSA et advisories fournisseurs : le contexte qui rend les CVE remédiables
Les advisories expliquent quoi corriger, quelle version viser, quel contournement appliquer et comment communiquer le risque CVE aux équipes.
CPE, vendors et produits : le chaînon manquant entre catalogue CVE et risque réel
Une CVE globale ne devient actionnable que lorsqu’elle est reliée à un produit, une version et un périmètre. Comprendre le rôle des CPE dans CVE Watch.
EPSS et CVE : utiliser la probabilité d’exploitation sans perdre le contexte métier
EPSS aide à trier les CVE selon leur probabilité d’exploitation, mais il doit être combiné avec KEV, CVSS, CPE, exposition et criticité métier.
Backfill NVD : pourquoi la complétude du catalogue CVE change toute la priorisation
Un catalogue CVE incomplet fausse les métriques, les timelines et les décisions patch. Voici pourquoi le backfill NVD est une fondation de sécurité, pas une tâche technique secondaire.
Sources de données CVE : comment construire une vision fiable du risque vulnérabilité
NVD, OpenCVE, CISA KEV, GCVE, EPSS, CERT-FR, MSRC, GHSA, Exploit-DB, Nuclei et advisories fournisseurs : comprendre le rôle de chaque source dans une plateforme CVE exploitable.
SIEM and SOAR Threat Intelligence Enrichment: Workflows, Field Mapping, and the Metrics That Keep Teams Sane
A SOAR playbook without enrichment is a ticket printer. A SIEM with unbounded threat feeds is a bill. Here is a practical way to design enrichment for Splunk, Sentinel, or Elastic-style stacks—what to store, when to run playbooks, and what to report upward.
Threat Intelligence Risk Scoring: How to Calibrate Reputation, Reduce False Positives, and Defend Your Decisions
A noisy score is worse than no score. Learn what makes a reputation model trustworthy, how to combine multi-source evidence, and how to communicate uncertainty to your SOC and your executives.
Proxy, VPN, Tor, and Datacenter IPs: A Decision Matrix for WAF, Fraud, and SIEM Rules (Without Breaking Real Users)
Not every "datacenter" IP is malicious, and not every Tor exit is a fraudster. This matrix-style guide helps you combine IP type signals with reputation and product context for safer, explainable security decisions.
Threat Intelligence Platforms: Architecture, Data Quality, and High-Signal Feeds
Design TIPs and intel pipelines that scale: normalization, confidence scoring, deduplication, API-first delivery, and how to pair platform investments with analyst workflows.
Building IOC Pipelines: From Raw Indicators to Operational Threat Intelligence in 2026
A practical engineering guide to building indicator of compromise (IOC) pipelines—ingestion, normalization, deduplication, enrichment, scoring, distribution, and feedback—to turn raw threat feeds into operational defense.
Answer-Engine Optimization for Cybersecurity: How to Get Cited by ChatGPT, Perplexity, and Claude in 2026
Traditional SEO is not enough when users ask large language models for vendor comparisons and step-by-step security guidance. Learn how to structure threat intelligence and security content so AI systems can parse, trust, and cite your brand without hype or ambiguity.
Strategic, Tactical, and Operational Threat Intelligence: Frameworks for Modern Security Programs
Align CTI outputs with audience needs: executive risk narratives, SOC-ready IOCs, and MITRE-mapped TTPs—plus governance models that keep intelligence timely and measurable.
Hash Reputation at Scale: Building Detection Rules That Survive Real Networks
Move beyond one-off hash blocks: design reputation pipelines, reduce false positives, and integrate file intelligence with IP and domain context for enterprise-grade detection engineering.
EPSS vs CVSS vs KEV: How to Prioritize CVEs When Everything Looks Critical
Cut through scoring confusion: compare CVSS severity, EPSS exploit probability, and CISA KEV active exploitation—and learn a practical model for patch and compensating-control decisions.
Initial Access Brokers: How Threat Actors Breach Enterprise Perimeters in 2026
A deep dive into initial access brokers (IABs)—the cybercrime specialists who sell footholds into corporate networks—covering their techniques, pricing, detection signals, and how to defend against the top attack vectors they exploit.
Strategic, Operational, and Tactical Threat Intelligence: A Practitioner's Framework for 2026
A complete guide to the three levels of threat intelligence—strategic, operational, and tactical—with practical examples of consumers, outputs, feeds, and how to connect them into a coherent CTI program.
CI/CD et fuites de secrets : sécuriser vos pipelines
Clés API et jetons dans les dépôts Git, caches de build exposés, pipelines trop permissifs : la supply chain logicielle commence dans votre forge. Bonnes pratiques et contrôles minimum pour 2026.
Purple team : aligner CTI, red team et détection
La purple team n’est pas un gadget RH : c’est le lieu où l’intelligence sur les menaces rencontre les tests d’intrusion et les règles SIEM. Comment structurer ces ateliers pour des résultats mesurables.
Real-Time IP Reputation Check: Stop Cyber Threats at the Network Edge
Real-time IP reputation checks give you the power to identify and block malicious actors the moment they connect to your systems. Discover how to implement automated threat detection that works at machine speed, not analyst speed.
Extensions de navigateur malveillantes : un angle mort de la sécurité
Les extensions Chrome et Edge ont accès à vos pages, cookies et parfois à tout le trafic HTTP. Voici comment les attaquants les distribuent, comment les détecter, et quelles politiques IT adopter.
Injections de prompt et LLM : sécuriser vos applications en 2026
Les modèles de langage intégrés aux produits exposent de nouvelles surfaces d’attaque : jailbreak, exfiltration de données et contournement de politiques. Voici un cadre pragmatique pour architectes et développeurs.
Cognitive Hacking: The Battle for Your Mind
Cognitive hacking targets the user, not the machine. It manipulates perception and decision-making through disinformation and psychological triggers.
The Splinternet: Navigating a Fragmented World Wide Web
The global internet is fracturing into regional, regulated intranets. We explore the rise of the "Splinternet" and its impact on cybersecurity and global business.
The Evolution of Threat Intelligence in 2026
Threat intelligence has moved beyond simple blocklists. Explore how AI, context, and real-time integration are shaping the future of cyber defense.
The Dark Web vs. Deep Web: Where Do Cyber Threats Hide?
Confused by the Dark Web and Deep Web? We explain the difference and where cyber threats like stolen credentials and malware actually live.
What is a C2 Server? The Invisible Puppet Masters of the Internet
Discover how hackers control infected devices using Command and Control (C2) servers and how to detect these hidden threats.
Space Systems Cyber Threats: Securing the Final Frontier
As space becomes accessible, it becomes a target. From satellite hijacking to ground station jamming, we analyze the unique threats to orbital assets and how threat intelligence secures the new space race.
Metaverse Security: Privacy and Identity in Virtual Worlds
As the enterprise Metaverse expands, so does the attack surface. From avatar impersonation to spatial data theft, we explore the new frontier of virtual threats and how IP reputation protects digital assets.
Threat Intelligence Sharing: How Organizations Fight Back Together
No single organization can monitor every threat alone. Learn how information sharing communities (ISACs), standard protocols like STIX/TAXII, and commercial threat feeds form a collaborative shield against adversaries.
Detecting VPNs, Proxies & Tor: The Hidden Threat in Anonymized Traffic
Legitimate users rarely hide behind Tor or anonymous proxies. Discover how attackers exploit anonymization layers to bypass defenses, and how IP intelligence helps you unmask high-risk traffic in real-time.
Credential Stuffing Attacks: Why Stolen Password Lists Keep Working
Billions of breached username/password pairs are actively weaponized every day. Learn how credential stuffing differs from brute force, why it succeeds at scale, and how to stop it using IP reputation and anomaly detection.
Drone Defense Security: Mitigating Unauthorized UAV Threats
Unauthorized drones pose a threat to critical infrastructure, stadiums, and prisons. This post explores Counter-Unmanned Aircraft Systems (C-UAS), detection methods, and how strict "no-fly" zones are enforced electronically.
Smart City Security: Protecting Critical Infrastructure from Cyber Attack
Connected traffic lights, sensors, and water systems create a vast attack surface in modern cities. We examine the vulnerabilities of smart city infrastructure and the cascading failures a cyberattack could cause.
Satellite Internet Security: Vulnerabilities in Low Earth Orbit (LEO)
Attack surfaces expand vertically as LEO constellations integrate with enterprise networks. This post details orbital jamming, ground station spoofing, and the lack of encryption standards in commercial satellite systems for security engineers.
Cyber Threats 101: Understanding Online Dangers
A beginner's guide to common cyber threats. Understand malware, viruses, and hackers, and learn how to protect yourself online.
Healthcare IoT Security: The Critical Risk to Patient Safety
Connected medical devices (IoMT) introduce life-critical vulnerabilities into hospital networks. From MRI machines to insulin pumps, this guide analyzes the unique challenges of securing legacy firmware and unpatched operating systems.
isMalicious vs Shodan: Threat Reputation vs Attack Surface Discovery
Shodan maps internet-connected devices. isMalicious checks if IPs and domains are malicious. Compare these complementary threat intelligence tools across features, use cases, and pricing to choose the right one.
Automating Threat Intelligence: Speed is Your Best Defense
Manual analysis cannot keep up with machine-speed attacks. Learn how to automate threat data ingestion and response to block threats in milliseconds, not minutes.
Contextual Threat Intelligence: Moving Beyond Static Blacklists
Static IP blacklists are no longer enough. Discover the power of contextual threat intelligence—connecting IPs, domains, and behavior to see the full attack picture.
Navigating Data Privacy: GDPR, CCPA, and Cybersecurity Compliance
Privacy regulations are reshaping cybersecurity strategies. Understand the key requirements of GDPR and CCPA and how to align your security program with privacy compliance.
Automotive Cybersecurity: Hacking Connected Cars in 2026
With cars becoming data centers on wheels, the attack surface expands into the powertrain, infotainment, and OTA update systems. We analyze CAN bus injection vulnerabilities and the security risks of V2X communication protocols.
Threat Hunting: Proactive Security Detection Beyond Automated Alerts
Waiting for alerts means waiting for attacks to succeed. Learn how proactive threat hunting helps security teams discover hidden threats, improve defenses, and stay ahead of sophisticated adversaries.
Shadow IT Risk Management: Securing Unauthorized Applications and Services
Employees use unauthorized apps and services that IT cannot see. Learn how to discover shadow IT, assess risks from unsanctioned tools, and implement governance without stifling innovation.
DevSecOps: Integrating Security into the CI/CD Pipeline
Security should not be an afterthought. Learn how to implement DevSecOps to automate security testing and vulnerability scanning within your development workflow.
Lateral Movement Detection: Stopping Attackers from Spreading Through Your Network
After initial compromise, attackers move laterally to reach valuable targets. Learn how to detect lateral movement techniques, implement segmentation, and stop attackers before they reach critical assets.
IoT Security Threats: Protecting Your Smart Devices from Cyberattacks
Internet of Things devices are increasingly targeted by cybercriminals. Learn how to identify IoT vulnerabilities, secure smart devices, and protect your network from IoT-based attacks.
DDoS Attack Prevention: Strategies to Protect Your Online Services
Distributed Denial of Service attacks can cripple your online presence. Learn how to identify DDoS threats, implement effective mitigation strategies, and maintain service availability during attacks.
Data Exfiltration Prevention: DLP Strategies to Protect Sensitive Information
Data theft can occur through countless channels. Learn how to detect and prevent data exfiltration, implement effective DLP strategies, and protect your organization most valuable assets from leaving your control.
Dark Web Monitoring: Protecting Your Brand and Detecting Leaked Data
Stolen credentials and sensitive data often surface on the dark web before being exploited. Learn how dark web monitoring helps detect breaches early and protect your organization from cybercriminal activities.
Mobile App Security: Protecting iOS and Android Applications
Mobile applications are prime targets for cybercriminals. Learn about common mobile security threats and how to protect your iOS and Android apps from reverse engineering and malware.
Understanding IP Maliciousness: A new way to protect your network.
Discover how assessing the potential maliciousness of an IP can safeguard your systems against cyber threats. Learn about the indicators, methods, and tools that help identify malicious IPs and take proactive measures.
Expert Threat Intelligence Analysis
Our blog features in-depth analysis from our threat research team. Each article is backed by real data from our analysis of millions of malicious domains, IPs, and URLs across the global threat landscape. Topics include ransomware campaigns, phishing techniques, malware distribution networks, and emerging threat trends. We publish actionable intelligence that security teams can immediately use to improve their defenses.
Practical Security Guidance
Beyond threat analysis, we share practical guidance for security practitioners. Our tutorials cover API integration, SIEM configuration, threat hunting techniques, and building effective threat intelligence programs. Whether you're a SOC analyst, security engineer, or CISO, you'll find content tailored to your role and experience level.
Stay Ahead of Emerging Threats
The threat landscape evolves constantly. Our blog keeps you informed about the latest attack techniques, newly discovered vulnerabilities, and emerging threat actors. Subscribe to our newsletter for weekly digests of the most important developments in cybersecurity.
Subscribe to Our Newsletter
Weekly threat intelligence insights delivered to your inbox.