Cybersecurity Search Engines

Shodan

Search exposed devices connected to the internet — the de facto standard for attack surface discovery.

Censys

Assess attack surfaces of internet-connected devices and services.

GreyNoise

Contextualizes background noise from internet-wide scanning — filters signal from the noise.

Vulners

Vulnerability search engine with CVE indexing and exploit tracking.

Pulsedive

Threat intelligence feeds, enrichment, and community-sourced IOC searches.

IntelligenceX

Search Tor, data leaks, domains, emails, and historical internet records.

Hunter

Find and verify email addresses associated with any domain.

URLScan

Scan and analyze websites — inspect behavior, resources, and outbound connections.

GrayHatWarfare

Search publicly exposed Amazon S3 buckets for accidental data exposure.

LeakIX

Search exposed services and publicly indexed sensitive data.

crt.sh

Search certificates logged by Certificate Transparency — great for subdomain discovery.

Netlas

Search and monitor external internet-facing assets and attack surfaces.

Binary Edge

Scans the internet for threat intelligence and exposes attack surface data.

Grep App

Search across open-source GitHub repositories for code patterns and secrets.

PublicWWW

Search websites by HTML, JavaScript, and CSS source code fingerprints.

ZoomEye

Internet-wide scanner for threat research and device fingerprinting.