You've probably heard the terms "red team" and "blue team" thrown around in security discussions. But what actually happens during these engagements? How do they differ from a standard pentest? And at what stage does your organization need one?
Red Team vs Blue Team vs Pentest
Penetration Test
- •Test specific targets within a defined scope
- •Goal: find as many vulnerabilities as possible
- •Duration: 1-4 weeks
- •Defenders are typically informed
Red Team Engagement
- •Simulate a real adversary across the full organization
- •Goal: achieve specific objectives (data exfil, domain admin, etc.)
- •Duration: 4-12 weeks
- •Only leadership knows — tests detection and response
The Three Roles
Red Team (Attackers)
Offensive security experts who simulate real-world adversaries. They use the same techniques as actual attackers — reconnaissance, social engineering, exploitation, lateral movement, and data exfiltration. No techniques are off the table (within agreed rules of engagement).
Blue Team (Defenders)
The organization's security operations team — SOC analysts, incident responders, and security engineers. They monitor for threats, investigate alerts, and respond to incidents. In a red team exercise, they don't know the attack is simulated.
White Team (Referees)
A small group of stakeholders who know about the exercise. They ensure safety, handle escalations, and manage the "game" without revealing it to the blue team. They also define the rules of engagement and off-limits targets.
Inside a Red Team Engagement
Phase 1: Reconnaissance (Weeks 1-2)
OSINT gathering
Map the organization's digital footprint: domains, subdomains, employee names, email formats, technology stack, office locations, social media presence. Much of this mirrors what our AI does in the first phase of a Web Security Auditor assessment.
Target identification
Identify high-value targets: executives with access to sensitive data, development teams with code repository access, IT administrators with domain admin credentials.
Attack surface mapping
Discover external-facing services, VPN endpoints, web applications, API endpoints, cloud infrastructure. Look for shadow IT and forgotten services.
Social engineering recon
Build profiles of target individuals. Research their communication patterns, tools they use, projects they work on — all from public information.
Phase 2: Initial Access (Weeks 2-4)
The red team attempts to gain a foothold through multiple vectors simultaneously:
Initial Access Vectors
Phishing
Targeted phishing emails crafted using OSINT. Modern red teams use AI to generate convincing, personalized emails — as we discussed in our article on AI-powered attacks.
Web application exploitation
Test external web applications for vulnerabilities. SSRF, authentication bypass, file upload abuse — the same vulnerabilities we find in web application pentests.
Credential attacks
Password spraying against exposed services (VPN, email, SSO). Credential stuffing with leaked passwords from previous breaches. Default credential testing on management interfaces.
Physical (if in scope)
Tailgating into offices, planting rogue devices (USB drops, network implants), accessing unlocked workstations.
Phase 3: Lateral Movement (Weeks 4-8)
Once inside, the red team moves toward their objectives:
Privilege escalation
Elevate from a regular user account to local admin, then to domain admin. Exploit misconfigurations, unpatched systems, or weak service account credentials.
Network mapping
Discover internal services, databases, file shares, and other systems. Identify where sensitive data lives and what paths lead to it.
Credential harvesting
Extract passwords from memory, cached credentials, configuration files, and password managers. Crack hashes. Steal Kerberos tickets.
Objective completion
Reach the defined objectives — access the CEO's email, exfiltrate customer data, modify financial records, or whatever was agreed upon in the rules of engagement.
Phase 4: Debrief and Improvement (Weeks 10-12)
Red Team Report
Full attack narrative: what was tried, what worked, what was detected, what wasn't
Blue Team Report
Detection timeline: what alerts fired, how they were triaged, what was missed
Joint Debrief
Red and blue team together — attack replayed step by step with detection gaps identified
Improvement Plan
Prioritized list of detection, prevention, and response improvements
When Do You Need a Red Team?
ℹ️The Maturity Ladder
Red teaming is for organizations that have already invested in security fundamentals. If you haven't done a pentest yet, start there. As we outlined in Bug Bounty vs Pentest vs Audit, the right approach depends on your maturity level.
Security Testing Maturity
Stage 1: Vulnerability Assessment
Automated scanning to identify known vulnerabilities. Good starting point. Our Web Security Auditor covers this automatically.
Stage 2: Penetration Test
Expert manual testing of specific targets. Finds logic flaws and complex vulnerabilities that scanners miss. Most organizations should be here.
Stage 3: Red Team
Full adversary simulation testing your people, processes, and technology. Only valuable if you have a security team to test.
Stage 4: Continuous Red Team
Ongoing adversary simulation with a persistent red team. For mature security programs with dedicated SOC teams.
You're ready for a red team if:
- You've already done multiple pentests and fixed the findings
- You have a security operations team (SOC) that monitors for threats
- You want to test your incident detection and response, not just find bugs
- You need to validate your security investment with realistic attack scenarios
- Executive leadership wants to understand real-world risk, not just vulnerability counts
You're NOT ready if:
- You haven't done a basic pentest yet
- You don't have anyone monitoring security alerts
- You know you have unpatched critical vulnerabilities
- Budget is limited (pentests give better ROI at earlier stages)
Purple Teaming: The Best of Both
Purple teaming combines red and blue in a collaborative exercise:
Traditional Red Team
- •Red team operates in secret
- •Blue team doesn't know when or how attacks happen
- •Findings revealed only at the end
- •Tests realistic detection capability
Purple Team
- •Red and blue team work together
- •Red team explains techniques as they execute them
- •Blue team tunes detection in real-time
- •Maximizes learning and improvement speed
Purple teaming is often more cost-effective: instead of spending 8 weeks discovering the blue team's blindspots, you spend 2 weeks actively fixing them together.
The AI Advantage in Red Teaming
As we explored in Why AI-Assisted Security Auditing Finds More Vulnerabilities, AI is changing the testing paradigm:
- AI-powered reconnaissance covers more attack surface than manual OSINT
- Automated scanning identifies external-facing vulnerabilities at scale
- AI-generated phishing tests resilience against modern social engineering
- Pattern analysis identifies lateral movement paths in complex networks
Our approach: AI handles the breadth (reconnaissance, scanning, pattern detection), human red teamers handle the depth (creative exploitation, complex attack chains, novel techniques).
Ready to test your defenses? Start with our Web Security Auditor for automated vulnerability discovery, or request a full engagement that includes manual penetration testing with AI-powered coverage. For Web3, our Smart Contract Auditor provides the specialized analysis your protocol needs.