Check

Start with what you need to evaluate.

Pick the object first. Vuln Signal will point you to the useful tool, the plain-language explanation, and the next decision step.

What do you need help checking?

Use plain language or choose a common goal. The result is navigation guidance, not a security conclusion.

Choose a focused check flow

Inputs here are used only to route you. They are not stored by the guide.

Choose goalProvide inputReview routeTake action

Website or domain

Route a domain check

Vulnerability or version

Route affected-status work

Email

Route email analysis

Technical artifact

Detect or choose a utility

What are you trying to check?

The full tools catalogue stays available, but this page starts from the user's problem.

Website or domain

Check public posture

Use the seeded CyberShield demo, DNS lookup, TLS helper, and header guidance to understand common website and domain signals.

Open scanner demoDNS toolTLS tool

Email security

Check spoofing protection

Review SPF, DKIM, DMARC, mail headers, and suspicious email evidence before trusting a sender or domain.

Mail auth toolEmail parser

Vulnerability or version

Am I affected?

Move from CVE or scanner signal to affected scope, fixed versions, backports, false positives, and owner questions.

Validate affected statusFalse positives

IP, network, or exposure

Check reachability context

Use network helpers and exposure operations to reason about public-facing pressure without claiming local exposure from public data alone.

Exposure operationsSubnet toolCIDR tool

Technical artifact

Decode, compare, or extract

Use utilities for JWTs, JSON, YAML, hashes, timestamps, indicators, defanging, regex, Sigma, YARA, and hunt starters.

Choose a utilityTool chains