Threat Intelligence Blog
Research, insights, and updates from the isMalicious team. Page 3 of 8.
Session Token Theft: Why Infostealers Bypass MFA and How Defenders Respond
Infostealers increasingly target browser cookies, session tokens, and refresh tokens. Learn why MFA is not enough, what token theft looks like, and how to detect replay.
Cloud Control Plane Attacks: Why Identity Is the New Kill Chain
Cloud breaches increasingly target the control plane: identities, tokens, policies, APIs, and automation. Learn how attackers move from one credential to full cloud control.
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.
Malicious npm Packages: Detecting Open-Source Supply Chain Compromise
Malicious npm packages use typosquatting, dependency confusion, install scripts, and maintainer compromise to steal secrets and backdoor builds. Learn practical detection and response.
Malicious Infrastructure Clustering: How Passive DNS, TLS Certificates, and ASNs Reveal Shared Campaigns
A single C2 IP is a clue; shared signing patterns and DNS co-occurrence are a map. This guide explains how defenders cluster infrastructure without chasing ghosts—and how to document findings for IR, threat intel, and law enforcement handoffs.
Compromised Domains in Phishing: When Trusted Sites Become Attack Infrastructure
Attackers increasingly host phishing pages, redirects, and malware on compromised legitimate domains. Learn why reputation bypass works and how to detect hidden malicious paths.
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.
DPRK Remote IT Worker Threat: Identity, Insider Risk, and Cloud Access Abuse
DPRK remote IT worker schemes blend fraud, identity deception, and insider access. Learn how hiring, endpoint, SaaS, and cloud controls can reduce the risk.
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.
Cloud IP Reputation: What AWS, Azure, and GCP Defenders Should Track in 2026
Cloud IP addresses are shared, recycled, and abused at scale. Learn how to interpret reputation signals, reduce false positives, and align network security with platform-native controls across the three major hyperscalers.
ASN Reputation for Threat Intelligence: How Autonomous System Intelligence Improves Prioritization and Hunt Programs
An IP address is a snapshot; an autonomous system (ASN) is a neighborhood. Learn how to use ASN context safely for triage, fraud, and security operations—without mistaking a giant cloud for a monolithic "bad host".
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.
IOC Enrichment APIs: A Security Operations Guide to Faster Triage, Fewer False Positives, and Measurable ROI
An indicator without context is a ticket without an owner. Learn how IOC enrichment APIs work, which fields SOC teams need at each tier, and how to wire them into case management without building a data swamp.
Supply Chain CVE Response: SBOMs, Dependency Risk, and Coordinated Vulnerability Disclosure
Build a modern supply-chain security program: generate SBOMs, map CVEs to components, integrate EPSS and KEV, and coordinate fixes across vendors and open-source maintainers.
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.
CVE Numbering Authorities and the Vulnerability Disclosure Process: A 2026 Practitioner Guide
Understand how CVEs are born—from initial vulnerability discovery through CNA assignment, coordinated disclosure, and publication—plus how this pipeline shapes defender priorities and SEO-visible vulnerability data.
Initial Access Brokers and Ransomware: Mapping Attack Vectors Across the Cybercrime Supply Chain
Understand how access brokers monetize footholds, how ransomware affiliates purchase them, and which defensive controls break the supply chain—from phishing to exposed services.
Spear Phishing and Social Engineering: The Top Attack Vectors Targeting Enterprises in 2026
A complete guide to modern spear phishing and social engineering attack vectors—how threat actors plan, lure, and pivot, with detailed defensive controls for email, identity, training, and infrastructure reputation.
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.
OSINT for SOC Analysts: Turning Open Source Intelligence Into Threat intelligence analysts can use
A complete guide to open source intelligence (OSINT) for security operations—tools, techniques, workflows, and legal considerations for collecting, analyzing, and operationalizing open threat data in a modern SOC.
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 production-ready detection engineering.
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