Understanding Reconnaissance Techniques Used By White-Hat Hackers

As a white-hat hacker for a big audit firm I spent days and nights in our “lab The most interesting stage of a targeted attack is the reconnaissance, or footprint analysis. Here you use the web, search engines, whois, and nslookup, to discover as much about the target as possible. A whois lookup can tell you email address formats for instance (first letter last name @ company.com).

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