Cyber Defense Training

Train your blue team against real adversaries. Multi-day exercises with live attack scenarios, MITRE ATT&CK coverage, and after-action review. From single-team drills to multinational events with 40+ teams.

40+ teams trained · 15+ countries · 12 years · Clutch 5.0★
Free consultation · No commitment · Response within 24h
Cyber Defense Training

Your SOC team trains on alerts. Attackers train on evasion. BSG bridges the gap with realistic adversary simulation exercises — designed by offensive security experts with OSCP, OSEP, and CRTP certifications who know exactly how real attackers operate.

Trusted By

SoftServe
MacPaw
airSlate
Preply
Readdle
signNow
Credo Bank
Vispato
Property Finder
Credit Agricole
Brightgrove
Lohika
HelloFlex Group
Quividi
Juro

Why Your Team Needs Adversary Simulation Training

Security tools generate alerts. But when a real attacker is inside your network, your team's ability to detect, investigate, and contain the threat depends on skills that only hands-on practice can build. Classroom training teaches theory — adversary simulation tests capability under real pressure. With DORA requiring threat-led penetration testing (TLPT) for financial entities and NIS2 mandating incident response exercises by October 2026, the regulatory case is clear. But the operational case is stronger: teams that practice against realistic adversaries detect real incidents faster, contain them earlier, and recover with less damage.

Our Approach to Blue Team Training

BSG is a specialized adversary simulation exercise provider working with organizations across Europe and globally. Our exercises are built by the same offensive security experts who conduct penetration tests and red team engagements. We design multi-stage attack scenarios mapped to MITRE ATT&CK, deploy realistic infrastructure on AWS, and run live red team operations while your blue team defends. Every exercise ends with a detailed after-action review identifying specific skill gaps and improvement priorities.

Adversary Simulation Exercise Formats

Threat Hunting CTF

Threat Hunting CTF

Teams investigate pre-planted attack artifacts across Windows and Linux environments. Progressive difficulty from basic log analysis to advanced forensics. MITRE ATT&CK-scored with real-time leaderboard. Ideal for building foundational detection skills.

Live Red vs Blue

Live Red vs Blue Exercise

BSG red team operators launch real-time attacks while your blue team defends. Multi-stage intrusion with lateral movement, privilege escalation, and data exfiltration. Tests detection speed, investigation depth, and containment effectiveness under pressure.

Incident Response Drill

Incident Response Drill

Scenario-based incident response exercise focused on containment and recovery. Teams receive alerts from a simulated SIEM, triage under time pressure, and execute response playbooks. Measures mean time to detect, contain, and report.

Purple Team Exercise

Purple Team Exercise

Collaborative format where red and blue teams work side by side. Red team demonstrates attack techniques; blue team tunes detections in real time. Produces a concrete improvement plan with specific detection rules and coverage gaps mapped to ATT&CK.

Multinational Exercise

Multinational Exercise

Large-scale competitive event for multiple teams across organizations or countries. Isolated network segments per team, centralized scoring via CTFd, and real-time standings. Battle-tested at 40+ team scale across 15+ countries with dedicated infrastructure per participant group.

DORA/NIS2 Compliance Exercise

DORA & NIS2 Compliance Exercise

Purpose-built exercises satisfying DORA threat-led penetration testing (TLPT) requirements under Article 26 and NIS2 incident response mandates under Article 21. Produces audit-ready documentation with evidence of team performance, detection capabilities, and response effectiveness for regulatory review.

Project Details

Duration

1 to 3 exercise days, plus 4-8 weeks of planning and infrastructure setup.

Team

2-6 BSG operators (red team lead, exercise director, infrastructure engineer, observers).

Supervision

Managed by the Exercise Director, coordinated with your SOC/IR team leads.

Suitable for

Suitable for

  • SOC and incident response teams
  • MSSPs training analyst cohorts
  • Financial services (DORA compliance)
  • Critical infrastructure (NIS2 compliance)
  • Defense and government organizations
  • Cross-functional crisis management teams
Applicable to

Applicable to

  • Validate detection and response capabilities against realistic threats
  • Meet DORA operational resilience testing requirements
  • Satisfy NIS2 incident response exercise mandates
  • Identify skill gaps and prioritize training investments
  • Build team cohesion under realistic pressure
  • Produce audit evidence for cyber insurance and compliance

What You Get

  • Purpose-built exercise environment deployed on cloud infrastructure
  • Custom attack scenarios mapped to MITRE ATT&CK framework
  • Real-time scoring and team performance tracking
  • Detailed after-action review with each team
  • Written report: team performance, detection gaps, and improvement plan
  • MITRE ATT&CK heat map showing coverage vs. gaps
  • Compliance-ready documentation for DORA/NIS2 audit evidence

Why Choose BSG for Cyber Defense Training?

Offensive expertise
Offensive Experts Run Defense Training

Our red team operators design and execute exercises. They know exactly how real attackers operate — because that's their day job.

Proven scale
Battle-Tested at Scale

40+ teams across 15+ countries in a single exercise. Purpose-built infrastructure, isolated segments per team, real-time scoring.

Compliance
DORA & NIS2 Ready

Exercises produce audit-ready documentation for DORA operational resilience testing and NIS2 incident response requirements.

Certified
Certified Professionals

OSCP, OSEP, CRTP, CRTE-certified operators with years of penetration testing and red team experience.

Custom scenarios
Custom Scenarios

Every exercise is tailored to your threat landscape. Industry-specific attack chains, not generic CTF puzzles.

Insurance
Professional Insurance

Worldwide professional liability coverage protecting all training engagements.

Pricing

Focused IR & Threat Hunting

  • Hands-on incident response drills or threat hunting CTF
  • 1-day format for a single team (5-20 participants)
  • Custom scenarios mapped to your industry threat landscape
  • After-action review and written skill gap assessment
  • Compliance-ready documentation for audit evidence

Full Adversary Simulation

  • Multi-day exercise with live red team operations
  • Dedicated infrastructure per team (AD, Linux, SIEM, EDR)
  • MITRE ATT&CK-mapped scenarios with progressive difficulty
  • Real-time scoring, after-action review, and improvement plan
  • Scales from single team to 40+ team multinational events

Testimonials

In only three weeks, Berezha Security produced a report and re-checked things to ensure there were no security gaps. They offered free advice and communicated efficiently, promptly addressing all questions related to their findings.

Mykhaylo Kropyva

Information Security Director, SoftServe

We look forward to working with Berezha Security more in the future. Their workflow was smooth and the communication was thorough, especially for reports and findings. They helped us diagnose and fix issues on our production servers, delivering outputs on time and within budget.

David Abrams

Co-Founder & CTO, Demio

The BSG team's expertise and professionalism exceeded our expectations. Their thorough approach to security testing gave us confidence in our platform's resilience, and their clear reporting made it easy to prioritize and address findings.

Technical Director

European FinTech Company

Our Certifications

Our team holds the industry's most demanding security certifications, independently validating expertise in penetration testing, application security, cybersecurity consulting, and red team operations.

How It Works

Once you decide to run an exercise, here's the process:

  • Scoping call to define objectives, team size, and exercise format
  • BSG designs custom attack scenarios based on your threat landscape
  • Infrastructure deployment and environment testing (4-8 weeks lead time)
  • Exercise execution: 1-3 days of hands-on training
  • After-action review with each participating team
  • Written report: performance analysis, skill gaps, and improvement priorities

Give your team the experience of defending against a real attack — before one actually happens.

Ready to test your team's defenses against real adversaries?

When you prepare attack scenarios, you think: “This is too noisy, defenders will spot it immediately.” But switch to the blue team side, and you realize it’s actually really hard. Finding correlations in thousands of logs without practical experience is almost impossible. Theory is important, of course. But a SOC team that hunted a simulated attacker at least once will always do a much better job than a team that only read the documentation.

Serhii Korolenko

SERHII KOROLENKO

OSCP, Senior Consultant & Training Lead

Frequently Asked Questions

What is adversary simulation training?

Adversary simulation training puts your security team in a realistic environment where professional red team operators launch multi-stage attacks while your blue team defends in real time. Unlike tabletop exercises that test process, adversary simulation tests actual detection and response skills against live threats mapped to MITRE ATT&CK techniques.

How is this different from classroom training?

Classroom and online training teach theory. BSG exercises are hands-on: your team operates real security tools against real attack traffic in a purpose-built environment. We test actual detection and response skills under pressure — the kind of muscle memory that only comes from facing realistic adversaries in a live environment.

What infrastructure do we need to provide?

None. BSG deploys the full exercise environment on cloud infrastructure (AWS), including Active Directory domains, Linux servers, SIEM, EDR, and network monitoring tools. Everything is provisioned via Infrastructure-as-Code for repeatability. Your team only needs laptops with browser and VPN access.

How many participants can join an exercise?

BSG exercises scale from a single SOC team (5-10 people) to multinational events with 40+ teams and 200+ participants. Each team gets its own isolated network segment with dedicated infrastructure. Our largest exercise to date involved 40 teams across 15+ countries competing simultaneously.

Does this help with DORA or NIS2 compliance?

Yes. DORA (Digital Operational Resilience Act) requires financial entities to conduct operational resilience testing, including threat-led penetration testing. NIS2 requires essential and important entities to implement incident response exercises. BSG's exercises directly satisfy these requirements and produce documentation suitable for audit evidence.

What does the exercise cost?

Pricing depends on scope and format. Focused IR and threat hunting exercises for a single team start from $15,000. Full adversary simulation exercises with dedicated infrastructure, custom scenarios, and after-action review range from $40,000 to $150,000+. Multi-team and multinational exercises are quoted individually based on team count, duration, and infrastructure requirements.

How long does an exercise take?

Exercise duration is modular: 1 day (threat hunting CTF or focused IR drill), 2 days (CTF + live red vs blue), or 3 days (full program with threat hunting, live defense, and response action phases). Planning and infrastructure setup typically require 4-8 weeks of lead time before the exercise dates.

What if our team is not experienced enough?

We calibrate every exercise to your team's current maturity level. For teams new to hands-on training, we start with threat hunting CTFs using progressive difficulty — foundational log analysis before advanced forensics. For experienced SOC teams, we run full adversary simulation with sophisticated multi-stage attacks. The goal is always to stretch your team's capabilities without overwhelming them.

How do you handle confidentiality?

All engagements are covered by NDA and professional liability insurance. Exercise environments are fully isolated on dedicated cloud infrastructure — BSG never accesses your production systems. All exercise data, reports, and team performance records are confidential and shared only with designated stakeholders.