From the course: Deep Dive into Open-Source Intelligence
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Using OSINT to find phone numbers
From the course: Deep Dive into Open-Source Intelligence
Using OSINT to find phone numbers
- [Instructor] Phone numbers play a key role in social engineering and OSINT. Once upon a time, during a network penetration test engagement, I discovered a web login page for my target's digital phone system. I was surprised to see that all I needed to gain access to the employee's voicemail messages and contacts was a valid three-digit extension and corresponding four-digit PIN number. My next task was to obtain phone numbers and extensions for employees within the target organization. If I was able to use OSINT to gather phone numbers and extensions, guessing the four-digit PIN for each extension would be fairly easy. So I went to work using some techniques to gather phone numbers for the organization and its employees. If my target is a business, the first place I start looking for phone numbers is on the organization's website. It's rare to find a business that doesn't advertise at least one phone number on…
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