A Penetration Test, also referred to as a “pentest”, a network security test designed to simulate an illegal hack. Pen Testing companies employ the same tactics as malicious hackers to weed out vulnerabilities in the network and see what data they can access. Once the simulated “hack” is completed, the pen testing company provides a full report for the company, alerting them to the weakness in their system, what data is vulnerable, and how to fix the issues.