How to solve 'Missing in action' [OSINT]

Step by step writeup

Details from the challenge few weeks after it was released. You can check the challenge on HTB's new website here.

All we know is that we need to look for a person named ‘Roland Sanchez’ from Birmingham, UK. The family is convinced that he was kidnapped while on a business trip. We’ll search LinkedIn first (since it’s a business trip):