About
Abhijith B R [Abx].Tactical Adversary®

The Tactical Adversary warrior, half red and half blue

I believe that we're eternal noobs aka perpetual learners, consistently acquiring new insights from our daily encounters and the esteemed members of the security community. I adhere to the traditional hacker philosophy of acquiring knowledge and passing it on to others.
The primary objective of the Tactical Adversary project is to amass knowledge concerning diverse cyber security, red teaming and adversarial attack simulation tactics, presenting them uniquely. This platform serves as a space for me to share my personal reflections, thoughts and experiences. The Tactical Adversary project strives to curate and generate resources related to offensive security, red teaming, adversary attack simulation, survival, technology, philosophy, tradecraft, and the tactics, techniques, procedures employed by adversaries.

WhoAmI.

Abhijith B R (Abx)

Abhijith "Abx" B R

Abhijith B R, also known by the pseudonym Abx, has more than a decade of experience in the offensive cyber security industry. He is a professional hacker, offensive cyber security specialist, red team consultant, security researcher, trainer and public speaker.
Currently, he is building BreachSimRange.io as a founder, director and involved with multiple organizations as a consulting specialist, to help them build offensive security operations programs, improve their current security posture, assess cyber defense systems, bridge the gap between business leadership and security professionals.

Abhijith was responsible for building and managing offensive security operations and adversary simulation for a prominent FinTech company called Envestnet, Inc. After Envestnet, he spent several years as a freelance offensive cyber security consultant, building offensive security teams for FinTech, defense and government organizations. In the past, he held the position of Deputy Manager - Cyber Security at Nissan Motor Corporation, and prior to that, he worked as a Senior Security Analyst at EY.

As the founder of Adversary Village, Abhijith spearheads a community initiative focused on adversary simulation, adversary-tactics, purple teaming, threat actor/ransomware research-emulation, and offensive cyber security. Adversary Village is part of DEF CON Villages and organizes hacking villages at prominent events such as the DEF CON Hacking Conference, RSA Conference etc.

Abhijith B R (Abx) speaking at Black Hat USA Abx also acts as the Lead of an official DEF CON Group named DC0471. He is actively involved in leading the Tactical Adversary project (https://tacticaladversary.io/) a personal initiative that centers around offensive cyber security, adversary attack simulation and red teaming tradecraft.

Abhijith has spoken at various hacking and cyber security conferences such as, DEF CON hacker convention – Las Vegas, RSA Conference – San Francisco, DEF CON Singapore, DEF CON Middleeast – Bahrain, Black Hat USA Arsenal, The Diana Initiative – Las Vegas, DEF CON 28 safemode - DCG Village, Opensource India, Security BSides Las Vegas, BSides San Francisco, BSides Tampa, Hack Space Con – Kennedy space center Florida, Nullcon – Goa, c0c0n – Kerala, BSides Delhi etc.

The story.

Abhijith started in 2010 as a security consultant and trainer. Since then he has worked on the offensive side of security - penetration testing, red teaming and adversary simulation.

He was a Senior Security Analyst at EY, Deputy Manager, Cyber Security at Nissan Motor Corporation, and built and managed offensive security operations at Envestnet. He spent several years as an offensive security consulting specialist, building offensive cyber security teams for fintechs, defence and government organizations. Founded Adversary Village at DEF CON.

Today he is the founder and director of BreachSimRange in Abu Dhabi. He teaches at DEF CON Training around the world and still runs Adversary Village at DEF CON, RSAC and Black Hat.

  1. 2010Security consultant, trainer
  2. EYSenior Security Analyst
  3. NissanDeputy Manager, Cyber Security
  4. EnvestnetOffensive security operations
  5. Consulting SpecialistBuilding offsec teams: fintech, defense, govt
  6. BreachSimRangeFounder and Director, Abu Dhabi
  1. 2010First job as a security analyst and security trainer.
  2. 2017Started blogging. First conference talk, PentestoBots, at BSides Delhi.
  3. 2018Senior Security Analyst at EY. Panelist at Open Source India.
  4. 2020Talk at the DEF CON 28 DCG Village.
  5. 2021Founded Adversary Village at DEF CON 29.
  6. 2022Talk at c0c0n on getting more value from security investments with adversary simulation and purple teaming.
  7. 2023Adversary Sandbox at RSA Conference. Adversary Wars CTF at DEF CON 31.
  8. 2024Workshops at BSides Las Vegas, BSidesSF, RSAC and Hack Space Con at Kennedy Space Center. Panels at DEF CON 32. Interviewed at BSidesSF and on PlexTrac Friends Friday during Black Hat.
  9. 2025Founded BreachSimRange in Abu Dhabi. First DEF CON Training courses, in Las Vegas and Bahrain. Talks at MITRE ATT&CK APAC, Hack Space Con and BSides Tampa. Panels at RSAC and DEF CON 33. Guest on the SquareX Be Fearless podcast.
  10. 2026DEF CON Training in Singapore, Las Vegas and the Middle East. RedTeamSimmer at DEF CON Singapore Demo Labs and Black Hat USA Arsenal. Panel and Learning Lab at RSAC. Interview with Jane Lo in Singapore. Sixth year of Adversary Village at DEF CON 34.

Book Abx to speak.

For keynotes, panels, workshops and training, message Abx on LinkedIn. Bios and photos for your event are below; each photo downloads at full resolution.

Message on LinkedIn @abhijithbr Speaker Bio