Alethe Denis is a Senior Security Consultant II at Bishop Fox specializing in red team social engineering, physical security bypass, and open-source intelligence (OSINT). With extensive experience conducting security assessments for both private and public sector organizations — including critical infrastructure — she brings a rare combination of technical depth and human-focused attack simulation to every engagement.
Alethe developed and owns Bishop Fox’s Tabletop Facilitation service line, designing realistic, scenario-driven exercises that help organizations stress-test their incident response capabilities.
A recognized leader in the DEF CON community, Alethe serves as Global DEF CON Groups Coordinator and Deputy Lead for DEF CON Groups Singapore, working to grow and support the international security community. She earned a DEF CON Black Badge at DEF CON 27 after winning the 10th annual Social Engineering Capture the Flag (SECTF) contest, compromising a Fortune 500 target using only a telephone. She and her teammates have also earned bronze, silver, Most Valuable OSINT, and Black Badge awards across multiple TraceLabs capture-the-flag competitions, including first place in the August 2020 DEF CON edition of the TraceLabs Missing Persons OSINT CTF.
Alethe has appeared on the Darknet Diaries podcast and has taken the stage at venues as varied as San Diego Comic-Con and the DEF CON main stage, and regularly supports conferences throughout the year with talks and workshops.
From Alethe Denis
Resource / Workshops & Training
Social Engineering: How to Build Pressure-Proof Pretexts
Jul 06, 2026
Event
San Diego Comic-Con 2026
July 23–26, 2026
Resource / Virtual Sessions
Beyond Awareness: Why Social Engineering Is a Control Design Problem
May 26, 2026
Resource / Virtual Sessions
Tactics of Deception: Protecting Trust and Purpose
Mar 24, 2026
Event
Bishop Fox at Wild West Hackin' Fest, Mile High 2026
February 12, 2026
Event
Datadog State of Cloud Security Livestream
January 27, 2026
Event
The YOLO Index and Tactical Risk in Red Team at Wild West Hackin' Fest 2025
October 8-10, 2025
Event
Alethe Denis to Speak at Dent 2025
September 14-16, 2025
Blog / Industry
From Talent Shortage to Cybersecurity Talent Pipeline
Aug 21, 2025
Event
Alethe Denis to Present at IAFCI International Training Conference & Exhibitor Show
August 28, 2025
Event
San Diego Comic-Con 2025: Exploring the Hacker’s Mind with DEF CON Black Badge Winner Alethe Denis
Thu, Jul 24, 2025 – Sun, Jul 27, 2025
Event
CybHER Conversation - From Black Badge to Red Team: Alethe Denis on Social Engineering and Offensive Security
June 13, 2025
Event
Alethe Denis to Deliver Keynote at 5th Annual Layer 8 Conference
Saturday, June 14, 2025
Blog / Technical Research
Epic Fails and Heist Tales: A Red Teamer’s Journey to Deadwood
Mar 31, 2025
Resource / Virtual Sessions
Epic Fails and Heist Tales: Red Teaming Toward Truly Tested Security
Mar 17, 2025
Blog / Industry
From Dial Tone to Throne: IVR Testing in the Spirit of The King of NYNEX
Feb 05, 2025
Event
Bishop Fox at CactusCon 13
February 14-15, 2025
Blog / Industry
Navigating Workplace Security: Red Team Insights for the Return to Office
Jan 10, 2025
Event
Alethe Denis Shared Real-World Red Teaming Stories at Wild West Hacking Fest 2024
October 9-11, 2024
Blog / Industry
Manipulating the Mind: The Strategy and Practice of Social Engineering
Aug 13, 2024
Blog / Industry
Strengthening Cybersecurity Defenses: Validating Incident Response Plans with Red Team Tabletop Exercises
Jan 04, 2024
Resource / Virtual Sessions
News Insights: 23AndMe with Alethe Denis, Security Expert - Red Team
Dec 12, 2023
Resource / Virtual Sessions
Pentest Tools Podcast: We Think We Know How to Explain the Value of a Penetration Test
Nov 07, 2023
Resource / Virtual Sessions
Combatting Adversaries: Proactive Social Engineering & Network Testing
Sep 19, 2023
Event
Bishop Fox to Present at BSides San Francisco
April 22-23, 2023
Resource / Virtual Sessions
Defend Like A Girl: Hacking Your Way to Cyber Success
Jan 01, 2023
Resource / Virtual Sessions
Combatting Adversaries: Proactive Social Engineering & Network Testing
Jan 01, 2023
Event
Senior Security Consultant Alethe Denis is set to speak at Converge Security Conference
September 30 at 1:30 PM
Resource / Virtual Sessions
Bishop Fox Live at DEF CON 30 featuring Alethe Denis
Jan 08, 2022
