Tactical Adversary | Abhijith B R (Abx)

Founder and Director, Abu Dhabi BreachSimRange An offensive security company running red teaming, breach and adversary simulation engagements and hands-on training for security teams. breachsimrange.io ↗

Founder and Lead, since 2021 Adversary Village A community initiative and DEF CON village for adversary simulation, threat actor emulation and purple teaming, at DEF CON every year since DC29. adversaryvillage.org ↗

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 DEFC CON, RSAC and Black Hat.

2010Security consultant, trainer
EYSenior Security Analyst
NissanDeputy Manager, Cyber Security
EnvestnetOffensive security operations
Consulting SpecialistBuilding offsec teams: fintech, defense, govt
BreachSimRangeFounder and Director, Abu Dhabi

Talks and training.

All talks and training →

KeynoteAug 2026 DEF CON 34 Adversary Village kick-off keynote panel

ArsenalAug 2026 Black Hat USA 2026 RedTeamSimmer, adversary emulation for Atomic Red Team

DemoApr 2026 DEF CON Singapore RedTeamSimmer at Demo Labs

PanelMar 2026 RSA Conference 2026 AI and the new offensive playbook of state-sponsored threat actors

Trainer and speaker at.

Villages, training, panels and tool demos at the conferences that matter to offensive security.

DC28 to DC34 Founder and lead of Adversary Village since DC29, trainer at DEF CON Training, and RedTeamSimmer at DEF CON Singapore Demo Labs.

Arsenal 2026 RedTeamSimmer, an adversary emulation platform for Atomic Red Team, demoed at Black Hat USA Arsenal in Las Vegas.

2023 to 2026 Panels, Learning Labs, hands-on emulation sessions and the Adversary Sandbox at RSA Conference in San Francisco.

Also on stage at

BSides Tampa, BSides Delhi, The Diana Initiative, MITRE ATT&CK APAC, Nullcon, Hack Space Con, MiliPol MTX etc.

Watch.

Singapore 2026 How attackers win, with Jane Lo

SquareX podcast Be Fearless: inside the attacker mindset

DEF CON 32 Panel: formidable adversaries

Black Hat 2024 PlexTrac Friends Friday, Hacker Summer Camp

BSidesSF 2024 Interview: Adversary Village

DEF CON 31 Adversary Wars, the Adversary Village CTF

DEF CON 29 Introducing Adversary Village

DEF CON Group Delhi Red Teaming 101

The Diana Initiative 2020 Internal Red Team Operations Framework

All webcasts → YouTube channel ↗

Elsewhere.

Affiliations.

Founder and lead Adversary Village DEF CON village for adversary simulation, purple teaming and threat actor emulation. adversaryvillage.org

Founder and director BreachSimRange Red teaming, breach and adversary simulation, and training. breachsimrange.io ↗

Creator Tactical Adversary The blog, podcast, webcast and adversary tactics on this site. tacticaladversary.io

Trainer DEF CON Training Two-day breach and adversary simulation course, taught in Las Vegas, Bahrain and Singapore. training.defcon.org

Lead DEF CON Group DC0471 The official DEF CON Group for Trivandrum. github.com/DC0471 ↗

Organizer BSides Kerala Security BSides community conference in Kochi, Kerala. bsideskerala.in ↗

Tactical Adversary.

Adversary attack simulation and red teaming tactics.
Everything on offensive security.
An attempt to create and collect adversary tradecraft and red teaming tactics.

Step into the adversary's shoes and envision the path they least expect, where foresight and prevention become their greatest challenge.

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.

Adversary Tactics

Short videos on adversary tactics and exploits.

Blog

Blog and random thoughts.

Webcast

Talks, panels, interviews and podcasts.

Podcast

Stories on real world adversaries and adversary tactics.

Train with Abx.

DEF CON Training, 2 days, CBAS certification

Offensive Cyber Security Operations

Mastering breach and adversarial attack simulation engagements

From initial access to exfiltration inside a defended lab. Build ransomware scenarios, run full breach simulations, and turn detection gaps into improvements. Students who complete the course earn the BreachSimRange CBAS certification, DEF CON Training edition.