Question 1

What is OSINT and what does Open-Source Intelligence mean?

Accepted Answer

OSINT (Open-Source Intelligence) is the practice of collecting and analyzing information from publicly available sources — search engines, social media, public records, DNS data, and archived web pages — to build an accurate picture of a person, domain, or organization. It relies entirely on data that is legally and openly accessible, not hacking or unauthorized access.

Question 2

Are the OSINT tools listed on OSINTPanel really free?

Accepted Answer

Yes. Every tool featured in our core directory has a genuinely free tier or is fully open source under a permissive license. Where a tool also sells a paid enterprise tier (like Shodan or Censys), we clearly label the free-tier limits so you know exactly what you get before signing up.

Question 3

Is it legal to use OSINT tools?

Accepted Answer

Using OSINT tools to gather publicly available information is generally legal in most jurisdictions. However, what you do with that information, and how you gather it, matters: scraping behind logins, bypassing rate limits, or using findings to harass or stalk someone can violate terms of service or the law. Always confirm you have a legitimate purpose and check local regulations before investigating a real person or organization.

Question 4

What is the best free OSINT tool for beginners?

Accepted Answer

Start with Sherlock for username-based social media enumeration and crt.sh for domain/subdomain discovery via certificate transparency logs. Both are free, require no account, and return results in seconds, making them the fastest way to learn how OSINT correlation works before moving to heavier frameworks like SpiderFoot or Maltego CE.

Question 5

How does OSINTPanel choose which tools to feature?

Accepted Answer

Every tool is manually installed and run against real (consented or synthetic) targets by our editorial team before it is listed. We verify the free tier still works as advertised, note rate limits and false-positive behavior, and re-test tools on a rolling basis. We do not accept payment for placement or ranking.

Question 6

What is the difference between passive and active OSINT recon?

Accepted Answer

Passive recon collects data without ever touching the target's systems — search engines, WHOIS, certificate transparency logs, cached pages, and breach databases. Active recon interacts directly with the target, such as port scanning or DNS brute-forcing, which is detectable and requires explicit authorization. Most OSINT investigations should start passive and only escalate with permission.

Censys Search

Overview

Field Note