Threat Intelligence Blog
Research, insights, and updates from the isMalicious team.
Mobile Smishing Defense: URL Scanners And Domain Reputation For July 2026
Mobile phishing keeps gaining operational relevance. Security teams need URL scanning, domain reputation checks, DNS pivots, and employee reporting workflows built for SMS and chat.
Shadow AI Data Leak Defense: Monitor Domains, URLs, And Unsanctioned AI Apps
Shadow AI has become a governance and data leakage issue. Security teams need discovery, DNS visibility, sanctioned app controls, and domain monitoring around AI tool usage.
Agentic AI Threat Mapping: MITRE ATT&CK Needs Evidence-Rich Workflows
Anthropic mapped AI-enabled cyber activity to MITRE ATT&CK and found gaps around autonomous orchestration. SOC teams need AI summaries tied to evidence, not unsupported verdicts.
Shadow AI Governance: How Security Teams Can Detect Risk Without Blocking Innovation
Shadow AI is the new shadow IT: fast adoption, weak visibility, and serious data leakage risk. Security teams need discovery, domain intelligence, policy, training, and monitoring.
MCP Security Risks: Tool Poisoning, Prompt Injection, and the New AI Agent Attack Surface
Model Context Protocol integrations give agents access to tools, files, and services. That power creates new risks: tool poisoning, prompt injection, overbroad permissions, and untrusted server abuse.
Security LLM and Agent Workflows: When (and How) to Check Malicious Domains, IPs, and URLs Before Acting
AI assistants in SOAR, IDEs, and browser extensions can exfiltrate data or run malicious code if they fetch the wrong link. This guide gives guardrails: schema for tool calls, policy tiers, and where threat intelligence checks belong in the loop.
Brand Impersonation and Lookalike Domains: A Practical Monitoring Playbook for Security, Legal, and Fraud Teams
Typosquats and homoglyphs are cheap to register and expensive to ignore. Learn how to discover, prioritize, and remove lookalike infrastructure before it harvests credentials or poisons your customers’ trust in search and email.
EPSS Explained: Using the Exploit Prediction Scoring System to Prioritize Patches in 2026
A practical guide to the Exploit Prediction Scoring System (EPSS)—how it works, how it complements CVSS and KEV, and how security teams can use EPSS probabilities to prioritize vulnerability management at scale.
IP and Domain Intelligence: Building a Proactive Cyber Threat Defense
Reactive 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: How to Identify Malicious Websites Before They Strike
Malicious 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.
Steganography: Hiding Secrets in Plain Sight
Steganography hides data within innocent-looking files like images or audio. Learn how hackers use digital steganography to smuggle malware and steal data.
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.
Is Your Email Leaking Data? How to Check Email Reputation
Learn why email reputation matters for security and deliverability, and how to check if an email address is compromised or malicious.
Why Your SaaS Needs to Block Disposable Email Addresses Immediately
Disposable 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.
Biometric Spoofing: Defeating Authentication in an AI World
Are fingerprints and facial recognition truly secure? We explore the techniques attackers use to spoof biometric sensors, from 3D-printed faces to synthetic voice cloning.
AbuseIPDB Alternative: IP Reputation, Domain, and URL Coverage
AbuseIPDB is strong for IP reputation, but it does not cover domains and URLs. Compare AbuseIPDB and isMalicious across coverage, API features, pricing, enrichment, and monitoring.
Malicious Domains vs. Safe Sites: How to Tell the Difference
Can you tell a malicious domain from a safe one? Learn the key differences and tools to verify website safety instantly.
The Deepfake Threat: Protecting Enterprise Security in the Era of AI
AI-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.
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.
The Hidden Cost of Bad IP Reputation: Why Ignoring It Drains Your Budget
Discover 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.
Email Authentication: Implementing DMARC, SPF, and DKIM for Email Security
Email spoofing enables phishing and business email compromise attacks. Learn how DMARC, SPF, and DKIM authentication protocols protect your domain from being impersonated in cyberattacks.
Business Email Compromise: The Multi-Billion Dollar Threat
BEC 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.
AI-Powered Cyberattacks: How Threat Actors Use Machine Learning
Cybercriminals 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.
How to Detect Malicious Domains and IPs: A Reputation Guide
A 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.
Proactive Threat Defense: Monitoring Malicious IP and Domain Reputation
Shift from reactive to proactive cybersecurity. Learn how monitoring malicious IP and domain reputation helps identifying threats early and stopping phishing attacks before they succeed.
Harnessing Public Sources for IP and Domain Maliciousness Detection
Learn 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.
Detecting malicious domain names: a guide to safer browsing
Explore 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.
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.
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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.
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