theHarvester is a tool for gathering subdomain names, e-mail addresses, virtual hosts, open ports/ banners, and employee names from different public sources (search engines, pgp key servers).
Is a really simple tool, but very effective for the early stages of a penetration test or just to know the visibility of your company in the Internet.

The sources are:


  • threatcrowd: Open source threat intelligence
  • crtsh: Comodo Certificate search –
  • google: google search engine – (With optional google dorking)
  • googleCSE: google custom search engine
  • google-profiles: google search engine, specific search for Google profiles
  • bing: microsoft search engine –
  • bingapi: microsoft search engine, through the API (you need to add your Key in the discovery/ file)
  • dogpile: Dogpile search engine –
  • pgp: pgp key server –
  • linkedin: google search engine, specific search for Linkedin users
  • vhost: Bing virtual hosts search
  • twitter: twitter accounts related to an specific domain (uses google search)
  • googleplus: users that works in target company (uses google search)
  • yahoo: Yahoo search engine
  • baidu: Baidu search engine
  • shodan: Shodan Computer search engine, will search for ports and banner of the discovered hosts (
  • hunter: Hunter search engine (you need to add your Key in the discovery/ file)
  • google-certificates: Google Certificate Transparency report


  • DNS brute force: this plugin will run a dictionary brute force enumeration
  • DNS reverse lookup: reverse lookup of ip´s discovered in order to find hostnames
  • DNS TDL expansion: TLD dictionary brute force enumeration

Modules that need API keys to work:

  • googleCSE: You need to create a Google Custom Search engine(CSE), and add your Google API key and CSE ID in the plugin (discovery/
  • shodan: You need to provide your API key in discovery/ (one provided at the moment)
  • hunter: You need to provide your API key in discovery/ (none is provided at the moment)


Changelog in 3.0.0:

  • Subdomain takeover checks
  • Port scanning (basic)
  • Improved DNS dictionary
  • Shodan DB search fixed
  • Result storage in Sqlite

Comments? Bugs? Requests?