Jean-Vincent QUILICHINI
Founder & CEO, isMalicious
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.
74 articles
Articles by Jean-Vincent
- isMalicious + Tenzir: Threat Intel in Your PipelineConnect isMalicious domain and IP feeds to Tenzir over STIX/TAXII for local DNS and network enrichment, with optional API lookups for investigations.
- IP 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.
- Domain 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.
- Domain 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.
- IP 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.
- Cognitive Hacking: The Battle for Your MindCognitive 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 WebThe global internet is fracturing into regional, regulated intranets. We explore the rise of the "Splinternet" and its impact on cybersecurity and global business.
- Steganography: 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.
- Polymorphic 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.
- Synthetic 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.
- Botnets 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.
- How 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.
- 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.
- Is 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.
- What Is a C2 Server? Detection ExplainedCommand-and-control servers run botnets and ransomware. How C2 traffic works, what it looks like on your network, and how to detect it.
- Space 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.
- Metaverse 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.
- Threat 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.
- Detecting 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.
- Credential 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.
- Drone 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.
- Building 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.
- Why Your SaaS Needs to Block Disposable Email Addresses ImmediatelyDisposable and temporary email addresses can enable fraud, spam, and abuse. Learn how disposable-domain detection supports account controls and sender reputation.
- How 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.
- Smart 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.
- Domain 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.
- Biometric 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.
- Industrial 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.
- Penetration 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.
- VirusTotal Alternative for SOC AutomationVirusTotal or isMalicious? Compare IP, domain, URL, and hash reputation, API limits, and pricing — and when each one is the right tool.
- Building 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.
- AbuseIPDB Alternative: IPs, Domains & URLsAbuseIPDB covers IPs only. See how isMalicious compares on domain and URL coverage, free-tier limits, enrichment, and monitoring — side by side.
- IAM 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.
- AlienVault OTX Alternative, API-FirstOTX is community pulses; isMalicious is a verdict API. Compare IOC enrichment, integrations, rate limits, and lock-in before you choose.
- isMalicious 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.
- The 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.
- Anatomy 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.
- Automating 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.
- Contextual 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.
- Domain 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.
- Best Threat Intelligence APIs in 2026isMalicious, VirusTotal, AbuseIPDB, OTX, Shodan, URLhaus — free tiers, rate limits, coverage, and which API fits which job, in one table.
- Navigating 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.
- API 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.
- Threat 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.
- Shadow 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.
- DevSecOps: 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.
- Lateral 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.
- IoT 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.
- Insider 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.
- Email 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.
- What 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.
- DDoS Attacks: Prevention That WorksWhat actually stops a DDoS attack: detection signals, mitigation layers, and the preparation that decides whether you stay online.
- Data 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.
- Dark 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.
- Container 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.
- Beyond 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.
- Mobile 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.
- Infostealer 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.
- CTF 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.
- Threat 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.
- Cryptocurrency 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.
- Cloud 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.
- Bot 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.
- DNS Blocklists: Stop Malware at the ResolverProtective DNS blocks malware before the connection opens. Setup guides for Pi-hole, AdGuard, and enterprise resolvers with live blocklists.
- Business 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.
- Supply 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.
- AI-enabled Cyberattacks: How Threat Actors Use Machine LearningCybercriminals are weaponizing artificial intelligence to launch sophisticated attacks at unprecedented scale. Learn how AI-enabled threats work and how threat intelligence can help you defend against them.
- Enhancing 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.
- Ransomware 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.
- SSL 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.
- Zero-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 use threat intelligence to protect your organization from unknown threats.
- Building 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.
- API Integration for Threat Intelligence: Automate Your SecurityDiscover how integrating threat intelligence APIs can transform your security infrastructure. Learn best practices for automated threat detection, continuous monitoring, and documented integration with your existing systems.
- 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.