Defensive Security Tools
Free, evidence-based checks that plug into the OpenTrojan intelligence loop — look up a CVE, analyse an indicator or inspect a message header, then continue to the related entity, evidence and investigation.
Intelligence Tools
Look up vulnerabilities and indicators against OpenTrojan intelligence.CVE Lookup
CVSS, severity, affected products, KEV status — from 2,000+ NVD-synced records.
Open tool Intelligence PopularIOC Lookup
Detect, normalize and check IP / domain / URL / hash indicators.
Open tool Intelligence PopularHash Checker
Identify MD5/SHA-1/SHA-256 and check known threat-intelligence hashes.
Open tool Intelligence PopularURL Reputation
Normalize a URL and compare its domain with threat-intelligence records.
Open tool IntelligenceIP Reputation
Validate IPv4/IPv6 and check against known threat-intelligence records.
Open toolSecurity Analysis
Analyze messages, tokens and links locally — nothing leaves your browser.Email Header Analyzer
Inspect From/Reply-To/SPF/DKIM/DMARC and phishing indicators locally.
Open tool Local-onlyJWT Decoder
Decode JWT header and payload claims locally (signature never verified).
Open tool Local-only IntelligenceURL Analyzer
Parse URL structure and spot obfuscation signals — never fetches the target.
Open toolNetwork Tools
Read-only infrastructure checks.Crypto & Encoding
Developer security utilities that run entirely in your browser.Tools connect to intelligence
Every tool is an entry point into the OpenTrojan intelligence loop: Tool → Result → Evidence → Entity → Investigation. For example, CVE Lookup opens the full CVE record with related actors and campaigns; IOC Lookup returns related intelligence when a record exists — and honestly reports "No verified intelligence found" when it does not.