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Announcing Ringzer0 #COUNTERMEASURE25 - a premier cybersecurity training and conference event! Ottawa 🇨🇦 Nov 2025 ★ Registrations Open
Austin, TX
Joined January 2019
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Meet the Researcher Free Webinar: Tobias Scharnowski (CISPA) on rehosting-based firmware fuzzing of the Tesla Universal Wall Connector — a bug chain that became an autonomous worm.
Sep 24, 11:00 ET. Free, registration required.
tinyurl.com/mtr26-tobias
@ScepticCtf
Free virtual session: "CATana: SIM Originating AT Commands - A New Threat?" — Marius Muench dives into CVE-2026-57550 & hostile SIM attacks hitting millions of smartphones/IoT devices. Sept 2026. Register free: tinyurl.com/mtr26-marius
Erik Egsgard's 3-day COUNTERMEASURE course takes participants deep into Windows kernel internals, driver attack surfaces, memory corruption, exploitability analysis, privilege escalation, and modern kernel mitigations.
bit.ly/4zidRq6
AI is changing vulnerability research.
COUNTERMEASURE Fall 2026 includes four virtual courses focused on the practical application of AI to vulnerability research.
Course details at ringzer0.training/countermea…
Ringzer0 COUNTERMEASURE Fall 2026:
Featured Virtual Training
Exploiting 10x Faster: AI Agents for Vulnerability Finding and Exploitation
Instructors: Omri Ben-Bassat, Vladimir Tokarev
Course information:
ringzer0.training/countermea…
#cybersecurity #aiagents #aivulnerability
Ringzer0 COUNTERMEASURE Fall 2026:
Featured In-Person Training (Ottawa, Canada)
Windows Kernel Exploitation
Instructor: Erik Egsgard (Field Effect)
Course information:
ringzer0.training/countermea…
#cybersecurity #kernelexploitation @fieldeffectsoft
Save the date: Ringzer0 COUNTERMEASURE returns in Fall 2026.
Virtual Training
Oct 26–31, 2026
In-Person Training
Nov 2–4, 2026
Ottawa
Conference
Nov 5–6, 2026
Ottawa
COUNTERMEASURE is a limited-capacity technical conference.
Check for updates:
ringzer0.training
Rust binaries aren’t C binaries.
Learn modern reversing techniques from Cindy Xiao (RECon / RE//verse / NorthSec speaker, founder of Decoder Loop).
Deconstructing Rust Binaries
March 2026 • Virtual
🔗 ringzer0.training/countermea…
25+ years in security.
BlackHat trainer.
0day researcher.
Marco Ortisi @redtimmysec — Edge Device Exploitation
March 2026 • Virtual
🔗 ringzer0.training/countermea…
Targeting firmware & custom protocols?
Fuzzing & Attacking Custom Embedded Systems — March 2026 (Virtual) - with @ScepticCtf and Marius Muench
⚠️ Fees increase March 7.
🔗 ringzer0.training/countermea…
Want to fuzz beyond userland?
Fuzzing the Linux Kernel — March 2026 (Virtual) - with @andreyknvl
⚠️ Price increases March 7.
🔗 ringzer0.training/countermea…
Free Virtual Session: March 5th 11am ET!
Edge devices like firewalls & VPN gateways are vital for network security—but they're often flawed due to vendor oversights.
Join our webinar to learn how to strengthen your security strategy!
Register Here: tinyurl.com/enemy-at-the-gat…
Routers. Firewalls. Industrial devices.
Edge systems are prime targets.
Learn exploitation techniques from Marco Ortisi @redtimmysec — penetration tester, red team manager & vulnerability researcher since 1999.
March 2026 (Virtual)
🔗 ringzer0.training/countermea…
Targeting edge and embedded systems with fuzzing?
Learn practical harness design, crash analysis, and repeatable workflows at Ringzer0 SPRING//2026.
🔗 ringzer0.training/countermea…
@ScepticCtf #fuzzing
ML + RE isn’t hype — it’s practical when done right. Explore reproducible ML techniques tailored for reverse engineering.
🔗 ringzer0.training/countermea…
@inventwithcode
Feb 21
🧪 New course at Ringzer0 SPRING//2026:
Fuzzing and Attacking Custom Embedded Systems — fuzz custom firmware, protocols, and peripherals for actionable vulnerabilities.
🔗 ringzer0.training/countermea…
#fuzzing @ScepticCtf
🦀 Deconstructing Rust Binaries — learn Rust-specific reversing for modern security research at Ringzer0 SPRING//2026.
🔗 ringzer0.training/countermea…
#rustbinaries
📱 Course spotlight at Ringzer0 SPRING//2026:
Mobile Reverse Engineering with r2frida
Dynamic analysis of iOS & Android apps using real instrumentation workflows — no guesswork, no toy examples.
🔗 ringzer0.training/countermea…
#R2frida #mobilereverseengineering
Want to fuzz beyond userland? Learn how to build harnesses, guide coverage, and triage crashes — all for the Linux kernel.
🔗 ringzer0.training/countermea…
@andreyknvl #fuzzing #linuxkernel
🧠 New at Ringzer0 SPRING//2026:
Fuzzing the Linux Kernel — hands-on techniques for discovering real bugs deep in system software.
🔗 ringzer0.training/countermea…
@andreyknvl #cybersecurity #ringzero