Skip to Main Content

Costa Petros

Senior Security Consultant

Costa Petros began his IT career by covering many facets from the ground up. While in college studying construction management, Costa’s ability to communicate, problem-solve, and collaborate awarded him his first job in IT as a dial-up Internet technical support representative.

As his career progressed, he worked his way up through technical and operational support, PC and IT infrastructure administration, compliance, and consulting roles. Costa held a position as an IT administrator at a branch of a publicly traded company that focused on reselling both Cisco and security services. Costa’s communication skills, technical aptitude, and ‘security-first’ approach opened the door to becoming a penetration tester consultant. As a penetration tester at TrustedSec, Costa specializes in social engineering and physical security assessments. He approaches his work with a ‘hope for the best, prepare for the worst’ mentality.


  • GIAC Penetration Tester (GPEN)
  • Microsoft Certified Professional (MCP)
  • VMware VCA-DCV


  • InfraGard Northern Ohio Chapter


  • DerbyCon staff and security, 2017-19

Costa’s passion for security was evoked at a young age. Growing up in the family takeout business, Costa was taught to protect what you have. This meant locking up at all hours of the day at the family business and at home. As a kid, running in and out of the house was frustrating when he found the doors locked. It didn’t take long for him to find other ways into the house, sometimes climbing onto the roof to bypass a window lock. A curious boy, Costa constantly took apart household items in order to fix, understand, and improve them. This curiosity, his ‘prepare for the worst’ mentality, and ‘protect what you have’ focus drive him to understand and further advance secure implementations.

Featured Blogs And Resources

Discover the blogs, analysis, webinars, and podcasts by this team member.

Blog April 19 2018

It Was the "Summerof2018" - Password Auditing for Windows Administrators

IT departments around the globe spend countless hours and money ensuring that their company’s data and infrastructure are properly secured. Startup company?…

Read about this article
Training Resources May 02 2024

Actionable Purple Team Simulation Online Training (May 2-3)

Learn how to create specific detections to identify early Indicators of Compromise (IOCs) in our online course. Designed for those looking to improve their…

Read about this article
Events Kennedy Space Center, Florida | April 10 2024

Hack Space Con 2024

Founder and CEO David Kennedy is the keynote speaker at this year's Hack Space Con! We are also proud to sponsor this event.

Read about this article
Webinars March 06 2024

Ask Me Anything: Securing Defense Contracts Through CMMC Compliance

Join Chris Camejo, Practice Lead, Advisory's Compliance Services, and Rick Yocum, Managing Director of Advisory Services, for an ‘Ask Me Anything’ discussion…

Read about this article
News March 01 2024

Forbes - How This Professional Hacker Built Two Cybersecurity Firms In His 30s

David Kennedy, the CEO and founder of TrustedSec, joins Rosemarie Miller on "New Money" to discuss his pivot from being in the U.S. marines to becoming a…

Read about this article
News February 28 2024

WWL First News - A cyberattack has disrupted prescription drug orders around the country

Advisory Solutions Director Alex Hamerstone spoke with WWL New Orleans about the recent cyberattack that disrupted prescription drug orders around the country.

Read about this article
Events TrustedSec HQ | February 27 2024

ISC2 February Member Meeting 2024

Join us at the TrustedSec HQ for the monthly ISC2 Cleveland Chapter member meeting!

Read about this article
Blog February 27 2024

Weaponization of Token Theft – A Red Team Perspective

This blog is the start of several deep dives into the weaponization of token theft. The focus of this blog will be on conditional access around devices and…

Read about this article
Podcasts February 23 2024

Security Noise - Episode 6.15

OSINT: Digital Detective or Cyber Stalking?

Read about this article
News February 23 2024

WEWS - Cyberattack disrupts prescription processing at pharmacies

A cyberattack on one of the country's largest healthcare technology companies has caused some to pay for their prescriptions out-of-pocket. Advisory Solutions…

Read about this article

Empower your business through better security design.

Talk directly with our experienced advisory consultants to learn how we can help.