Jean-Vincent is the founder of isMalicious and a cybersecurity entrepreneur focused on making threat intelligence accessible to every security team. He previously worked in cloud infrastructure security and API platform engineering.
Articles by Jean-Vincent
OSINT en cybersécurité : cadre légal et éthiqueLa collecte d’informations en sources ouvertes est puissante pour la CTI et l’investigation, mais elle heurte vie privée, droit d’auteur et territorialité. Repères pour les équipes qui veulent rester dans les clous.April 12, 2026Ransomware et double extorsion : stratégie de défenseChiffrement plus fuite de données : la double extorsion a changé la donne pour les sauvegardes et la communication de crise. Principes de résilience, négociation et préparation réglementaire.April 11, 2026IP and Domain Intelligence: Building a Proactive Cyber Threat DefenseReactive security leaves organizations perpetually one step behind attackers. Learn how combining IP and domain intelligence transforms your security posture from reactive incident response to proactive threat prevention that stops attacks before they start.April 11, 2026CI/CD et fuites de secrets : sécuriser vos pipelinesClés 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.April 10, 2026Domain Lookup for Phishing and C2 Infrastructure DetectionPhishing campaigns and malware operations depend on domain infrastructure that leaves detectable traces. Learn how advanced domain lookup techniques help security teams uncover phishing sites and command-and-control servers before they compromise your organization.April 10, 2026Purple team : aligner CTI, red team et détectionLa 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.April 9, 2026Real-Time IP Reputation Check: Stop Cyber Threats at the Network EdgeReal-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.April 9, 2026Domain Lookup: How to Identify Malicious Websites Before They StrikeMalicious websites are the launchpad for phishing, malware distribution, and credential theft. Learn how domain lookup tools use reputation data, WHOIS analysis, and threat feeds to identify dangerous domains before your users click.April 8, 2026Extensions de navigateur malveillantes : un angle mort de la sécuritéLes 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.April 8, 2026IP Lookup for Cyber Threat Detection: A Complete Security GuideLearn how IP lookup works as a frontline defense against cyber threats. Discover how to use IP reputation data, threat intelligence feeds, and automated checks to block malicious actors before they reach your systems.April 7, 2026Métriques SOC : quels indicateurs suivre pour la cybersécuritéUn SOC efficace ne se juge pas au volume d’alertes. Voici les KPI utiles pour mesurer la détection, la réponse et l’amélioration continue — sans noyer l’équipe sous les tableaux de bord inutiles.April 7, 2026Injections de prompt et LLM : sécuriser vos applications en 2026Les 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.April 6, 2026Cognitive Hacking: The Battle for Your MindCognitive hacking targets the user, not the machine. It manipulates perception and decision-making through disinformation and psychological triggers.April 5, 2026Quishing : quand le QR code devient une arme de phishingLes attaques par QR code (quishing) contournent les filtres e-mail et exploitent la confiance des utilisateurs. Découvrez les scénarios typiques, les signaux d’alerte et les mesures concrètes pour sensibiliser vos équipes et renforcer votre défense.April 5, 2026The Splinternet: Navigating a Fragmented World Wide WebThe global internet is fracturing into regional, regulated intranets. We explore the rise of the "Splinternet" and its impact on cybersecurity and global business.April 2, 2026Steganography: Hiding Secrets in Plain SightSteganography hides data within innocent-looking files like images or audio. Learn how hackers use digital steganography to smuggle malware and steal data.March 30, 2026Polymorphic Malware: The Shapeshifting CodeTraditional antivirus relies on signatures, but polymorphic malware changes its code every time it replicates. Discover how this shapeshifting threat evades detection.March 27, 2026Synthetic Identity Fraud: The Ghost in the MachineSynthetic identity fraud is the fastest-growing financial crime. Learn how criminals combine real and fake data to create "ghost" identities and how to detect them.March 24, 2026Botnets Explained: Is Your Computer Part of a Zombie Army?Botnets are networks of infected devices controlled by cybercriminals. Find out how they work, what they do, and how to check if your IP is involved.March 21, 2026How Hackers Use "Typosquatting" to Trick You (and How to Spot It)Typosquatting relies on your fingers slipping. Learn how attackers register look-alike domains to steal your data and how to check URLs before you click.March 18, 2026The 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.March 15, 2026Is Your Email Leaking Data? How to Check Email ReputationLearn why email reputation matters for security and deliverability, and how to check if an email address is compromised or malicious.March 12, 2026What is a C2 Server? The Invisible Puppet Masters of the InternetDiscover how hackers control infected devices using Command and Control (C2) servers and how to detect these hidden threats.March 9, 2026Space Systems Cyber Threats: Securing the Final FrontierAs 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.March 6, 2026Command & Control Infrastructure: Detecting C2 Traffic Before It Is Too LateOnce malware establishes a C2 channel, attackers have a persistent foothold in your environment. Understand how C2 infrastructure is built, how beacons evade detection, and how to identify malicious outbound connections using threat intelligence.March 4, 2026Metaverse Security: Privacy and Identity in Virtual WorldsAs 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.March 3, 2026Threat Intelligence Sharing: How Organizations Fight Back TogetherNo 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.March 3, 2026Detecting VPNs, Proxies & Tor: The Hidden Threat in Anonymized TrafficLegitimate 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.March 2, 2026Credential Stuffing Attacks: Why Stolen Password Lists Keep WorkingBillions 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.March 1, 2026Drone Defense Security: Mitigating Unauthorized UAV ThreatsUnauthorized 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.February 28, 2026Building a Custom SOC Dashboard: Integrating Real-Time Threat FeedsEnhance your Security Operations Center visibility. A step-by-step guide to aggregating threat data, enriching logs, and building custom security dashboards using modern Threat Intelligence APIs.February 28, 2026Why Your SaaS Needs to Block Disposable Email Addresses ImmediatelyDisposable and temporary email addresses are the gateway for fraud, spam, and abuse. Learn how implementing a robust email verification API protects your user base and improves your sender reputation.February 27, 2026How to Automate Malicious IP Blocking with Threat Intelligence APIsStop relying on static blocklists. Learn how to integrate real-time threat intelligence APIs into your firewalls and application logic to automatically detect and block malicious IP addresses before they strike.February 26, 2026Smart City Security: Protecting Critical Infrastructure from Cyber AttackConnected 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.February 25, 2026Domain Reputation Scoring: The First Line of Defense Against PhishingNot all domains are created equal. Discover how real-time domain reputation scoring helps organizations proactively identify and block phishing infrastructure, fake websites, and parked domains used by cybercriminals.February 25, 2026Biometric Spoofing: Defeating Authentication in an AI WorldAre fingerprints and facial recognition truly secure? We explore the techniques attackers use to spoof biometric sensors, from 3D-printed faces to synthetic voice cloning.February 22, 2026Industrial Control Systems (ICS) Malware Trends: The OT/IT Convergence RiskOperational Technology (OT) environments are under siege. We analyze the latest ICS-specific malware strains targeting PLCs and SCADA systems, and offer defense strategies for critical infrastructure.February 19, 2026Penetration Testing vs. Vulnerability Scanning: What's the Difference?Often confused, these two security practices serve very different purposes. Discover when to use automated scanning and when to invest in a manual penetration test.February 14, 2026isMalicious vs VirusTotal: A Modern Threat Intelligence AlternativeComparing isMalicious and VirusTotal for threat intelligence. Discover which IP and domain reputation API is right for your security stack — from pricing and features to real-time streaming and monitoring.February 14, 2026Building an Effective Incident Response Plan: A Step-by-Step GuideWhen a cyberattack strikes, panic is your enemy. Learn how to create and test an incident response plan to ensure your team knows exactly what to do.February 13, 2026isMalicious vs AbuseIPDB: IP Reputation and BeyondAbuseIPDB is the go-to for IP reputation, but what about domains and URLs? Compare isMalicious and AbuseIPDB across coverage, API features, pricing, and monitoring to find the right threat intelligence tool for your stack.February 13, 2026IAM Best Practices: Securing Identity and AccessIdentity is the new perimeter. Discover specific best practices for Identity and Access Management (IAM) to prevent unauthorized access and privilege escalation.February 12, 2026isMalicious vs AlienVault OTX: Threat Intelligence Without Vendor Lock-InAlienVault OTX offers a free threat intelligence community, but full value requires the AT&T ecosystem. Compare isMalicious and OTX on API access, integrations, and vendor independence for your security stack.February 12, 2026isMalicious vs Shodan: Threat Reputation vs Attack Surface DiscoveryShodan 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.February 11, 2026The Deepfake Threat: Protecting Enterprise Security in the Era of AIAI-generated video and audio are becoming indistinguishable from reality. Explore the rising threat of deepfakes to enterprise security and how to defend against synthetic media attacks.February 10, 2026Anatomy of Phishing Infrastructure: How Attackers Build Their TrapPeel back the layers of a modern phishing attack. From spoofed domains to SSL certificates, understand the infrastructure attackers use and how to detect it.February 10, 2026Automating Threat Intelligence: Speed is Your Best DefenseManual analysis cannot keep up with machine-speed attacks. Learn how to automate threat data ingestion and response to block threats in milliseconds, not minutes.February 10, 2026Contextual Threat Intelligence: Moving Beyond Static BlacklistsStatic IP blacklists are no longer enough. Discover the power of contextual threat intelligence—connecting IPs, domains, and behavior to see the full attack picture.February 10, 2026Domain Age as a Risk Indicator: Why "New" Often Means "Danger"Newly registered domains (NRDs) are a favorite tool for threat actors. Learn why domain age is a critical signal in your threat intelligence stack and how to use it effectively.February 10, 2026The Hidden Cost of Bad IP Reputation: Why Ignoring It Drains Your BudgetDiscover how poor IP reputation impacts more than just security—it affects email deliverability, ad spend, and customer trust. Learn why proactive monitoring is a financial necessity.February 10, 2026Best Threat Intelligence APIs Compared (2026): The Complete GuideA comprehensive comparison of the top threat intelligence APIs in 2026 — isMalicious, VirusTotal, AbuseIPDB, AlienVault OTX, Shodan, and URLhaus. Feature matrices, pricing breakdowns, and recommendations by use case.February 10, 2026Navigating Data Privacy: GDPR, CCPA, and Cybersecurity CompliancePrivacy regulations are reshaping cybersecurity strategies. Understand the key requirements of GDPR and CCPA and how to align your security program with privacy compliance.February 9, 2026API Security Best Practices: Defending Against the OWASP Top 10APIs are the backbone of modern applications but are often left vulnerable. Learn how to secure your APIs against common attacks like broken object level authorization and injection.February 7, 2026Threat Hunting: Proactive Security Detection Beyond Automated AlertsWaiting 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.February 6, 2026Shadow IT Risk Management: Securing Unauthorized Applications and ServicesEmployees 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.February 5, 2026DevSecOps: Integrating Security into the CI/CD PipelineSecurity should not be an afterthought. Learn how to implement DevSecOps to automate security testing and vulnerability scanning within your development workflow.February 5, 2026Lateral Movement Detection: Stopping Attackers from Spreading Through Your NetworkAfter 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.February 4, 2026IoT Security Threats: Protecting Your Smart Devices from CyberattacksInternet 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.February 3, 2026Insider Threat Detection: Identifying and Managing Employee Security RisksInsider threats pose unique challenges to organizational security. Learn how to detect malicious insiders, prevent data leakage, and build an effective insider threat program.February 2, 2026Email Authentication: Implementing DMARC, SPF, and DKIM for Email SecurityEmail spoofing enables phishing and business email compromise attacks. Learn how DMARC, SPF, and DKIM authentication protocols protect your domain from being impersonated in cyberattacks.February 1, 2026What is EDR? A Guide to Endpoint Detection and ResponseTraditional antivirus is no longer enough. Explore why Endpoint Detection and Response (EDR) is essential for modern cybersecurity and how it differs from legacy solutions.February 1, 2026DDoS Attack Prevention: Strategies to Protect Your Online ServicesDistributed 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.January 31, 2026Data Exfiltration Prevention: DLP Strategies to Protect Sensitive InformationData 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.January 30, 2026Dark Web Monitoring: Protecting Your Brand and Detecting Leaked DataStolen 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.January 29, 2026Container and Kubernetes Security: Protecting Cloud-Native ApplicationsContainer environments introduce unique security challenges. Learn how to secure Docker containers, Kubernetes clusters, and cloud-native applications from emerging threats and misconfigurations.January 23, 2026Beyond Phishing: Modern Social Engineering TacticsSocial engineering has evolved beyond simple phishing emails. Discover the latest tactics used by attackers, including vishing, smishing, and pigmenting, and how to spot them.January 20, 2026Mobile App Security: Protecting iOS and Android ApplicationsMobile 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.January 15, 2026Infostealer Malware: How Credentials End Up on the Dark WebInfostealers harvest credentials and sensitive data from infected systems, fueling a massive underground economy. Learn how these threats operate, how to detect them, and how to protect your organization from credential theft.January 11, 2026CTF and Bug Bounty Toolbox: Essential OSINT for Security ResearchMaster the reconnaissance phase of CTFs and bug bounties with these essential OSINT tools. From IP investigation to domain intelligence, build the toolbox that helps you find what others miss.January 10, 2026Threat Intelligence for Small Business: Enterprise Security on a BudgetSmall businesses face the same cyber threats as enterprises but with a fraction of the resources. Learn how affordable threat intelligence and smart security strategies can level the playing field.January 9, 2026Cryptocurrency and Web3 Security ThreatsThe Web3 ecosystem faces unique threats from wallet drainers to rug pulls. Learn how to identify malicious crypto domains, detect scams, and protect yourself and your users from blockchain-based fraud.January 8, 2026Cloud Security Threats: Protecting Multi-Cloud InfrastructureCloud environments face unique security challenges from misconfigurations to cryptomining attacks. Learn how to monitor cloud assets, detect threats, and protect your multi-cloud infrastructure with threat intelligence.January 7, 2026Bot Detection and Account Takeover PreventionAutomated bots drive credential stuffing, account takeover, and fraud at massive scale. Learn how IP reputation and threat intelligence can identify and block malicious automation before it compromises your users.January 6, 2026DNS Security and Threat Intelligence: Blocking Malware at the ResolverDNS is the first line of defense against malware and phishing. Learn how protective DNS and threat intelligence blocklists can stop threats before they reach your network, with integration guides for Pi-hole, AdGuard, and enterprise DNS.January 5, 2026Business Email Compromise: The Multi-Billion Dollar ThreatBEC attacks cost organizations billions annually through sophisticated impersonation and social engineering. Learn how domain spoofing detection and threat intelligence can protect your organization from CEO fraud and invoice scams.January 4, 2026Supply Chain Attack Detection: Lessons from SolarWinds to MOVEitSupply chain attacks have become the weapon of choice for sophisticated threat actors. Learn how to detect compromised vendors, monitor third-party risk, and protect your organization before your suppliers become your vulnerability.January 3, 2026AI-Powered Cyberattacks: How Threat Actors Use Machine LearningCybercriminals are weaponizing artificial intelligence to launch sophisticated attacks at unprecedented scale. Learn how AI-powered threats work and how threat intelligence can help you defend against them.January 2, 2026Enhancing Zero Trust with Malicious IP and Domain Reputation AnalysisZero Trust security demands constant verification. Discover how integrating malicious IP and domain reputation checks strengthens your threat intelligence and prevents phishing.December 7, 2025How to Detect Malicious Domains and IPs: A Reputation GuideA practical guide on detecting malicious domains and IPs using reputation data. Learn to spot phishing threats and secure your applications with real-time threat intelligence.December 6, 2025Proactive Threat Defense: Monitoring Malicious IP and Domain ReputationShift from reactive to proactive cybersecurity. Learn how monitoring malicious IP and domain reputation helps identifying threats early and stopping phishing attacks before they succeed.December 5, 2025Why Checking Malicious Domain and IP Reputation is Critical for Threat PreventionLearn why monitoring domain and IP reputation is essential for cybersecurity. Discover how to detect malicious threats, prevent phishing attacks, and leverage threat intelligence to protect your infrastructure.December 4, 2025Ransomware Detection and Prevention: A Comprehensive Defense StrategyLearn how to detect ransomware threats before they encrypt your data. Explore proven prevention techniques, early warning signs, and how threat intelligence can protect your organization from costly ransomware attacks.October 3, 2025SSL Certificate Security: Identifying Vulnerabilities and MisconfigurationsSSL certificates are crucial for secure web communications, but misconfigurations and vulnerabilities can expose your users to serious risks. Learn how to identify, assess, and fix SSL certificate security issues before attackers exploit them.October 2, 2025Zero-Day Vulnerabilities: Detection, Response, and Threat IntelligenceZero-day vulnerabilities pose one of the greatest cybersecurity challenges. Learn how to detect exploitation attempts, respond effectively, and leverage threat intelligence to protect your organization from unknown threats.October 1, 2025Building a Modern SOC with Threat Intelligence: A Practical GuideLearn how to build an effective Security Operations Center (SOC) powered by threat intelligence. Discover essential tools, processes, and best practices for detecting, analyzing, and responding to cyber threats in real-time.September 15, 2025API Integration for Threat Intelligence: Automate Your SecurityDiscover how integrating threat intelligence APIs can transform your security infrastructure. Learn best practices for automated threat detection, real-time monitoring, and seamless integration with your existing systems.September 13, 2025Harnessing Public Sources for IP and Domain Maliciousness DetectionLearn how public sources like IP sets and blocklists can enhance your cybersecurity defenses by providing actionable insights into IP and domain maliciousness. Discover how to integrate these resources into WAF solutions like Fortinet and Imperva.December 12, 2024Detecting malicious domain names: a guide to safer browsingExplore the world of domain name maliciousness and learn how to identify, assess, and protect against harmful domains. Discover tools and techniques to safeguard your online presence.December 12, 2024Understanding 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.December 11, 2024Understanding phishing and how to stay protectedPhishing is a growing cybersecurity threat that tricks individuals into providing sensitive information. Learn how to identify phishing attempts and implement strategies to stay safe online.December 10, 2024