Need to fast-track your pentesting? Our experts make it easy.
Need to fast-track your pentesting? Our experts make it easy.

Your Professional Pentester Community

Cobalt Core is a community of skilled, vetted pentesting professionals ready to work with you.

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Premium Pentesting.
at Your Fingertips.

No two applications are the same, just like no two pentests are the same. Cobalt brings the right combination of skills, performance and experience to fit your pentesting needs.

Our Vetting Process

Cobalt Core Pentesters are the best of the best. Each of our pentesters has gone through a strict vetting process that only admits the top 5% of applicants. These top performers make up our pentesting community, from which we hand-select the right person for your unique needs to handle your manual pentest.

Stage 1
We receive both inbound applications as well as community and customer referrals. Applications are reviewed by our community team based on tenure, skill and expertise.
Stage 2
Once a pentester is selected from the application process they are sent a Cobalt skills assessment to test their technical abilities.
Stage 3
After successful completion of the skills assessment, our team will set up a time to interview the candidate as a way to meet face-to-face, and align on community expectations.
Stage 4
Once a pentester has passed initial vetting, they will be verified by a third party verification vendor. At this stage, tax documentation will be confirmed and NDAs and Cobalt Terms of Engagement will be signed.
Stage 5
Continuous Evaluation
Core team uses a secure VPN for testing. Their work is always peer reviewed by trusted leads and the core labs team.

Our Core Team

We draw on a Core of 400+ highly vetted, certified pentesters to find the right skills to match to your security requirements and business needs.

Learn How Attackers Look at Your Application

Ethical hacking is when an individual looks for vulnerabilities within a network or application so they can help prevent malicious attacks.

Find out how Cobalt Core pentesters improve your security by diving into the mind of an ethical hacker and learning how your company can get ahead of threats.

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Communicate with Our Testers in Real-Time

Pentest Collaboration

Hear firsthand best practices for collaborating with the Core.
Get the most out of your pentest engagement.

Meet Our Testers

Our Pentester Spotlight highlights the fascinating journey of our Core members. Through an interview style, we share their experiences, background, and insights into the world of an accomplished ethical hacker.


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Cobalt-Our Pentesters-Stefan Nicula
Stefan Nicula
Certifications & Skills

Masters in IT&C Security, PhD in Information Security. Focus on reverse engineering, exploit development, and fuzzing on Windows.

Cobalt-Our Pentesters-Andreea Cristina
Andreea Cristina
Certifications & Skills

OSCP, OSCE, OSWP, ITILv3, ENG 812: Security Code Review

Saad Nasir
Saad Nasir
Certifications & Skills
OSCP,  PNPT,  CEH,  eJPT,  CySA+,  AWS-SSA, Red Teaming, Web Application, Cloud Security, Mobile Pentest, API Testing
Apoorva Jois
Certifications & Skills
OSCP, paCSP, CRTP, CEH, API, Web, Network, Cloud Pentesting
Alexis 270
Alexis Fernández
Certifications & Skills
OSCP, Recon, Web, Infrastructure, Network
Goonjeta Malhotra
Certifications & Skills
OSCP, Web, External Network, Internal Network, Web3, Code Reviews
Cobalt-Our Pentesters-Valerio Brussani
Valerio Brussani
Certifications & Skills

OSCP, OSWE, eMAPT, XRY, CyberArk CDE, Tenable TCSCE, Tenable TCNE, Tenable TCSA

Cobalt-Our Pentesters-Harsh Bothra
Harsh Bothra
Certifications & Skills

eCPPTv2, eWPTXv2, CEHv10

Sunil Kande
Sunil Kande
Certifications & skills
Web Application, SecurityiOS Application Security, CEH
Farid Luhar
Farid Luhar
certifications & skills

Web Application, Infrastructure, Mobile Application, IoT Penetration Testing, Source Code Review, OSCP, OSWE, CREST CPSA, CREST, CRT

Cobalt-Our Pentesters-Nikhil K Srivastava
Nikhil K Srivastava
Certifications & Skills

CREST, CEH, ECSA, LPT (Licensed Pentester)

Cobalt-Our Pentesters-Alex Moraga
Alex Moraga
Certifications & Skills

Vulnerability Researcher, Web Applications, Mobile App, iOS, Android, Networking, & OSCP

Cobalt-Our Pentesters-Jesus Espinoza
Jesus Espinoza
Certifications & Skills


Cobalt-Our Pentesters-Juan Pablo Ruffino
Juan Pablo Ruffino
Certifications & Skills

Web, API Security, CEH, & CPHE

Thrivikram Gujarathi
certifications & skills
Web Application, API PenTesting, Secure Code Review, Devsecops, Thick client, External Network, Threat Modeling, CEH, CDP, AZ-900
Cobalt-Our Pentesters-Aditya Agrawal
Aditya Agrawal
Certifications & Skills

Web, Mobile Applications, OSINT, External Network Pentest

Cobalt-Our Pentesters-Joao Brasio
Joao Brasio
Certifications & Skills

Information Security, Security Research, Vulnerability Research, Exploitation, Web Application Security, Mobile App

Cobalt-Our Pentesters-Çlirim Emini
Çlirim Emini
Certifications & Skills

API, Web Application Security, & OSCP

Cobalt-Our Pentesters-Manish Rohilla
Manish Rohilla
Certifications & Skills

Web Application Security, Network Security Assaessment, OSINT, OSCP, CEH, CHFI, AWS Security Certified

Cobalt-Our Pentesters-Nikhil Aswani
Nikhil Aswani
Certifications & Skills


Cobalt-Our Pentesters-Eduardo Zamorano
Eduardo Zamorano
Certifications & Skills

Red & Blue team, Bug Hunter, CTF playger, PPT, FSWA

Cobalt-Our Pentesters-Michal Brzezicki
Michal Brzezicki
Certifications & Skills

OSCP, eMAPT, C)PEH, ISO/IEC 27001 Lead Auditor, CBSP