Backtrack 4: Information Gathering: Searchengine: The Harvester – Email, User Names, Subdomain & Hostnames Finder
The next tool on Backtrack 4 I am going to review is The Harvester which was written by the guys over at Edge Security. The Harvester is a tool for gathering e-mail accounts, user names and hostnames/subdomains from different public sources. It’s a really simple tool, but very effective.
The supported sources are:
- Google – emails,subdomains/hostnames
- Bing search – emails, subdomains/hostnames
- Pgp servers – emails, subdomains/hostnames
- Linkedin – user names
Below I will go through a few examples of data mining some common search engines for usernames, email address’s and subdomains. The information gained in passive reconnaissance can be a invaluable resource for the penetration tester.