Independent tools / Open access
LOOK
CLOSER.
Question the input.
Understand the risk. Follow the evidence.
FREE TO USE NO ACCOUNT OPEN SOURCE
01 / THE TOOLKIT
4 WAYS TO LOOK CLOSER
AI Email Analyzer
Inspect suspicious emails for phishing signals.AI-assisted analysis
Security Headers Scanner
Check a website’s HTTP security headers.Live header checks
OWASP LLM Top 10
Explore the most common risks in LLM applications.Learn & practise
Research Workbench
Turn a test attempt into a private reproduction record.Private session notes
Clear inputs. Useful findings. Transparent data handling ↗
02 / Quick start
Start with a target.
Inspect response headers.
Find missing protections and get practical fixes for a public website.
- INPUT
- Public URL
- CHECKS
- 10 security headers
- OUTPUT
- Grade + recommendations
Examine a suspicious email.
Review phishing indicators, suspicious links, and social engineering tactics in one report.
Paste the email in the analyzer. Content is sent to OpenAI; NestCipher stores nothing.
- INPUT
- Email content
- REVIEW
- 6 threat categories
- OUTPUT
- Assessment + next steps
Understand the risks in LLMs.
Work through the OWASP LLM Top 10 with real-world examples and mitigation guidance.
A local learning reference and quiz. Runs in your browser.
- REFERENCE
- OWASP 2025
- EXPLORE
- 10 vulnerabilities
- PRACTICE
- Knowledge check
03 / Inside the email analyzer
The message.
The evidence.
What a message shows and what it contains can be different. Try three synthetic examples using the analyzer's deterministic checks.
Visible message
https://accounts.example/verify
Actual destination
https://login-check.example/verify
View source
[https://accounts.example/verify](https://login-check.example/verify)Detected evidence
- Link text does not match its destination
The label and destination use different hosts. Check the real destination before following a link.
Synthetic example. A flag is evidence to investigate, not a final verdict.
04 / THE FIELD GUIDE
GOOD RESEARCH
STARTS WITH
A BETTER QUESTION.
Learn to question the evidence. Explore three authored labs, prepare a private experiment, and carry your research into your own notes.
EXPLORE THE LABS OPEN THE FIELD GUIDE Invented teaching examples. Independent of Gray Swan.