INSIGHTS | September 1, 2026

Offensive Security Best Practices for Modern Enterprises

By IOActive

Security professional reviewing server infrastructure in a data center as part of offensive security best practices.)

Annual assessments are not enough. A strong security program tests its defenses against realistic attack scenarios throughout the year. Can an attacker reach a critical service? Will the security team see the activity? Can the organization contain it before the business feels the impact?

The answers depend on people, processes, and technology working together. These offensive security best practices help security leaders build an ongoing, threat-informed capability.

Offensive Security Best Practices at a Glance

Best practice	What it does	What to do	Business value
Threat-informed objectives	Prioritizes relevant threats, assets, and risks	Select two test objectives: one high-value asset path and one critical service path	Better use of security resources
Adversary emulation	Recreates realistic attacker behavior and objectives	Map one chained attack path and define evidence for each step	More accurate risk insight
Red and Purple Team exercises	Challenges defenses, then improves them collaboratively	Run an independent Red Team exercise, then retest the highest-risk gap with the Blue Team	Measurable defensive learning
Continuous validation	Retests controls after change, remediation, and new threats	Define retest triggers and compare the original result with the new result	Ongoing assurance
Full-stack coverage	Evaluates people, processes, technology, and dependencies	Map one business-critical service and test an attack across at least two layers	Fewer blind spots
Enterprise risk integration	Connects findings to business priorities and decisions	Assign an owner, a treatment decision, and a 90-day remediation path	Better governance and investment

Use the table to plan the work. The sections below show how to implement each practice and choose reporting measures.

Set Threat-Informed Objectives

Effective testing starts with the threats and assets that matter most. Before choosing an assessment, identify critical services and sensitive data. Also identify privileged identities and operational systems, and map the dependencies that support them.

Mandiant’s 2025 data shows why this prioritization matters. Exploits were the most common initial infection vector in its investigations, accounting for 33%. Stolen credentials accounted for another 16%. Prioritize the attack paths most likely to affect the business.

Create a risk register using four fields: business service, high-value asset, likely threat scenario, and security question. Rank each scenario by business impact, then assess its exposure and the ability to detect and contain it. Turn the highest-ranked scenarios into test objectives.

What to do

Choose two objectives: test one path to a high-value asset and one path that could disrupt a critical business service.
Write the security question: for example, “Can an attacker with a compromised identity reach the payment environment without triggering a response?”

These objectives set a clear destination and make the result easier to measure. Next, model how an attacker might reach it.

Use Adversary Emulation to Test Real Attack Paths

Adversary emulation recreates realistic attacker behavior and objectives. Moving well beyond isolated weaknesses, it tests whether an attacker can join techniques, move through the environment, and reach a clear target.

A scenario may include initial access and privilege escalation. It may include lateral movement and persistence. It may end with access to a high-value asset. A Red Team approach uses threat intelligence to shape the scenario. It also uses attacker tactics, techniques, and procedures to model a real attack chain.

Turn each step into a control-validation action. Record the failed control and the evidence available, then record the owner, remediation action, and retest date. This keeps the exercise focused on reducing risk and assigning follow-up work.

Mandiant reported a global median dwell time of 11 days in its 2025 report. When an outside party found the intrusion, the median was 26 days. Use these figures as context for your own baseline. For each exercise, record whether the path was completed, along with detection coverage, time to detect, time to contain, business impact, and internal discovery time.

Emulation should show which improvement can reduce risk next.

What to do

Build one attack chain: map the path from the selected entry point to the target asset, including the control expected to stop each step.
Define the evidence in advance: agree on the alerts, logs, response actions, and timing measures that will determine whether each control worked.

With the path defined, pair independent attack pressure with collaborative defensive improvement.

Combine Red Team and Purple Team Exercises

Red Team exercises provide an independent challenge. Skilled operators try to bypass controls and follow realistic attack paths. They work toward a defined objective. Threat-emulation services include Red Team, Purple Team, physical security and breach assessment, and social engineering.

Purple Team work turns that challenge into measurable defensive improvement. The offensive and defensive teams examine alerts together. They tune detection logic, refine response playbooks, and rerun the highest-risk failed step. Red Team shows what an attacker may accomplish. Purple Team tests whether defenders can detect and stop it.

Start with the highest-risk failed step, and focus the first retest on the control that matters most. Have the Blue Team confirm the expected alert, then run the response action. Repeat the step until the result is measurable. Track time to detect, time to contain, technique coverage, and recurring false positives.

No single improvement percentage applies across Red Team and Purple Team exercises. Compare the baseline with the retest result to show whether the organization became faster, more visible, or more resilient.

What to do

Run two exercises: use an independent Red Team scenario to test the attack path, then use a Purple Team session to validate the highest-risk detection and response gaps.
Retest the failed step: after tuning the alert, repeat the technique and confirm that the response works under realistic conditions.

The resulting evidence feeds the next practice: continuous validation.

Use Security Validation to Continuously Test Controls

Controls can lose effectiveness after configuration changes, new technology, security incidents, or shifts in attacker behavior. Security validation provides a repeatable way to check priority controls over time.

Build validation into risk, change, and remediation workflows. A practical cycle is: test the control, identify gaps, remediate them, retest, and report progress.

Define a retest trigger for each priority control. Verizon’s 2026 Data Breach Investigations Report found that software vulnerabilities began 31% of breaches and ransomware appeared in 48% of breaches. The report also found that 15% of breaches involved attack techniques bolstered by generative AI. These findings support validation whenever the environment or threat picture changes.

What to do

Set five triggers: retest after a material configuration change, a new exposed service, a high-severity vulnerability, a relevant threat-intelligence update, or completed remediation.
Report one outcome: record whether the original failure was reproduced, contained, or resolved, and attach the evidence.

Continuous Validation Triggers and KPIs

Validation trigger	Minimum response	KPI to report
Material configuration change	Rerun the affected attack step	Detection coverage before and after the change
New exposed service	Test access, authentication, and monitoring	Unauthorized paths found
High-severity vulnerability	Validate exploitability and containment	Exploit success and time to contain
Relevant threat-intelligence update	Add or revise an emulation scenario	Techniques covered
Completed remediation	Retest the original failure and record evidence	Failure reproduced: yes or no

When a failed control crosses a system boundary, extend the test across the full stack and verify the handoff.

Test the Full Stack

Attack paths cross security teams and technology layers. A weakness in identity management may expose an application. An application compromise may then provide access to cloud infrastructure, operational technology, or sensitive data.

A mature program tests people and processes as well as technology. The scope may include applications, APIs, cloud environments, endpoints, connected devices, AI systems, supply chains, hardware, and firmware. Shape the assessment around business risk and the dependencies that could change the outcome.

Full Stack Security Assessments cover physical security, hardware, embedded systems, and silicon-level systems. They also cover software, people, processes, and supply-chain security. This cross-layer view helps teams understand one attack path from entry point to business impact.

AI adoption adds another cross-layer dependency that can span several teams. Include identity, cloud, data, and AI workflows in the same risk conversation. Keep those workflows connected to the broader security program.

Measure the layers that matter to the selected service. Useful KPIs include social-engineering success and reporting rates. Track privileged paths, authorization bypasses, cross-zone paths, asset-to-asset paths, and untested dependencies.

What to do

Start with one service: map every dependency that supports a business-critical service, from people and facilities to applications and data.
Cross two layers: select one attack scenario that moves across at least two layers, such as identity to cloud or physical access to a workstation.

This produces a practical full-stack test and gives business leaders evidence they can use.

Connect Findings to Enterprise Risk Management

Offensive security creates value when each significant finding answers four questions. What could an attacker do? Which business service is affected? Which control failed? What should the organization address first?

The financial stakes make this translation important. IBM’s 2025 Cost of a Data Breach Report put the average global breach cost at $4.44 million and the mean time to identify and contain a breach at 241 days. Connect each finding to exposure, disruption, response performance, and the cost of reducing the risk.

NIST’s 2026 Cybersecurity Framework 2.0 quick-start guide links cybersecurity risk, enterprise risk, and workforce decisions. Give each priority finding a business owner, risk scenario, treatment decision, target date, and success measure.

Useful measures include priority attack paths validated and detection and containment performance. Track recurring control failures and the time between remediation and retesting. Map those measures to decisions about ownership, funding, staffing, architecture, and accepted risk.

What to do

Assign a decision owner: give each priority finding one accountable business owner and a technical lead.
Build a 90-day roadmap: put the highest-impact attack paths first, define retest dates, and report progress in the same forum used for enterprise risk decisions.

Enterprise Risk Decision Matrix

Security evidence	KPI to report	Enterprise decision
A priority attack path succeeds	Percentage of priority paths completed	Fund remediation or formally accept the risk
Detection is missing or delayed	Median time to detect	Prioritize monitoring, logging, or staffing
A control fails after remediation	Repeat-failure rate	Revisit the control design or implementation
Retesting is repeatedly delayed	Days overdue	Escalate ownership and delivery risk
A business service has several exposed layers	Number of exposed layers	Sequence a full-stack improvement plan

The real result is a better question: “Which risk decision should this evidence change?”

Make Offensive Security an Ongoing Capability

An ongoing capability links four activities: threat intelligence shapes the scenario, testing produces evidence, an owner handles remediation, and retesting confirms the result.

IOActive offers Red Team and Purple Team exercises, physical security and breach assessments, and social engineering. Its services also include full-stack assessments, penetration testing, code review, reverse engineering, secure development, advisory services, security training, and OCP SAFE assessments.

Select the service combination that matches the attack path. One engagement can expose the path, while follow-on testing and advisory support can help teams sustain the fix.

What to do

Schedule the retest first: define the evidence required to close the finding before the initial engagement begins.
Review the cycle quarterly: refresh threat scenarios, check overdue remediation, and select the next business-critical attack path.

Talk to IOActive About Offensive Security Best Practices

A mature offensive security program turns realistic attack testing into clear decisions. Test a business-critical attack path, measure how quickly defenses detect and contain it, fix the highest-risk gap, and retest.

If you need help connecting these activities across your technology stack, talk to IOActive. The team can help you apply these practices to a clear business risk.

Talk to IOActive about offensive security best practices

Sources

Google Threat Intelligence, “M-Trends 2025: Data, Insights, and Recommendations From the Frontlines,” https://cloud.google.com/blog/topics/threat-intelligence/m-trends-2025
IOActive, “Red Team & Purple Team Services,” https://www.ioactive.com/service/red-team-and-purple-team-services/
Verizon, “2026 Data Breach Investigations Report,” https://www.verizon.com/business/resources/reports/dbir/
IOActive, “Full Stack Security Assessments,” https://www.ioactive.com/service/full-stack-security-assessments-2/
IBM, “2025 Cost of a Data Breach Report: Navigating the AI rush without sidelining security,” https://www.ibm.com/think/x-force/2025-cost-of-a-data-breach-navigating-ai
National Institute of Standards and Technology, “NIST Cybersecurity Framework 2.0: Cybersecurity, Enterprise Risk Management, and Workforce Management Quick-Start Guide,” https://csrc.nist.gov/pubs/sp/1308/final

INSIGHTS | August 13, 2026

Red Team vs Penetration Testing: Key Differences

By IOActive

“Penetration testing identifies vulnerabilities. Red teaming evaluates how effectively an organization can detect and respond to realistic attacks.” IOActive Security Team

The decision between red team vs penetration testing comes down to one question: What are you trying to learn? Most mature security programs need both methodologies, deployed in sequence: penetration testing to close technical gaps, and red teaming to validate that the controls protecting what remains will hold under real adversarial pressure.

This article breaks down the differences between red team vs penetration testing so your organization can choose the right approach.

Red Team vs Penetration Testing at a Glance

Dimension	Penetration Testing	Red Team Engagement
Primary objective	Find and exploit as many vulnerabilities as possible	Simulate a targeted adversary; test detection and response
Scope	Defined: specific systems, apps, or networks	Broad: may include physical access, social engineering, supply chain
Duration	Days to weeks	Weeks to months
Stakeholders	Internal stakeholders are aware	Only select executives are involved; blue team is typically unaware
Methodology	Transparent, checklist-oriented	Covert, adversary-emulation, objective-based
Threat model	Generic opportunistic attacker	Specific threat actor (e.g., APT29, FIN7)
Output	Vulnerability list with severity rankings and remediation steps	Detection timelines, playbook gaps, response readiness report
Best for	Organizations building foundational security controls	Organizations with a mature SOC and incident response capability
Compliance value	High (PCI DSS explicitly requires it; the proposed HIPAA Security Rule update would mandate annual testing if finalized; SOC 2 auditors widely expect it)	Lower direct compliance value; higher strategic value
Cost	$5,000–$50,000 depending on scope; most mid-market engagements fall between $10,000 and $35,000	$20,000–$100,000+ depending on duration and complexity; full adversary simulations typically run $40,000–$100,000

Penetration Testing

What it is: A penetration test is a time-boxed, authorized engagement in which ethical hackers identify and exploit vulnerabilities across a defined set of systems, applications, or networks.

The goal: Find as many exploitable weaknesses as possible, demonstrate their real-world impact, and deliver actionable remediation guidance.

Pros: Penetration testing goes beyond automated vulnerability scanning by adding human judgment: chaining vulnerabilities, testing business logic flaws, and filtering genuine risk from noise. Findings are immediately actionable.

Cons: Internal teams are typically aware the test is underway, which limits the value for measuring detection and response.

Choose a pentest when:

A compliance mandate requires it (PCI DSS, HIPAA, SOC 2 Type II)
You have deployed new infrastructure, applications, or cloud environments
You are validating remediation from a prior assessment
You are establishing your organization’s first formal testing program

Red Team Testing

What it is: A red team engagement is a full-scope adversarial simulation in which expert ethical hackers pursue specific objectives, such as accessing sensitive data or compromising executive accounts. Red team engagements use the same tactics, techniques, and procedures (TTPs) as real-world threat actors.

The goal: Determine whether your organization’s people, processes, and technology can detect, contain, and respond to a sophisticated attacker pursuing a specific objective, before a real adversary tests those same capabilities.

Pros: The engagement runs covertly, often without notifying the organization’s own security staff. This generates realistic data on detection timelines and incident response effectiveness.

Cons: Red team engagements are not optimized for cataloging technical vulnerabilities at scale. If foundational controls are weak, the red team will often achieve its objectives before meaningful detection data can be collected. In those cases, a penetration test would have surfaced the same findings faster and at lower cost.

Choose a red team engagement when:

Your SOC monitors alerts but has never been validated against a sophisticated intrusion
You need to test people and processes, not just technical controls
You want to measure detection and response against a specific, realistic threat scenario
Your security program has matured beyond foundational vulnerability management

Choose Based on Security Maturity

The most reliable decision factor is security maturity, which determines which question you are ready to answer. Organizations that have not yet closed known vulnerabilities will get more value from a pentest than from a red team engagement.

Organizations early in their security journey should run penetration tests first. If a red team can compromise your environment in hours without triggering a single alert, those findings could have been reached more efficiently with a pentest. Closing known vulnerabilities first allows a red team engagement to surface detection and response gaps that actually matter.

Security Maturity and Testing

Maturity Stage	Indicators	Recommended Approach
Foundational	No formal pentest history; basic patching	Penetration testing
Developing	Regular pentests; security tooling in place	Pentesting + targeted red team scenarios
Established	Functioning SOC, SIEM, incident response plan	Both methodologies on a defined cadence
Advanced	Mature threat intelligence; purple teaming capability	Red team + purple team for continuous validation

Most organizations overestimate their maturity. If you have not run a penetration test within the past 12 months, or if your SOC has never responded to a simulated intrusion, a red team engagement will tell you less than a rigorous pentest will.

How the Two Methodologies Work Together

Penetration testing and red teaming are not competitors: they serve different stages of a security program. The typical progression is to run a pentest, remediate vulnerabilities, and build detection and response capabilities. From there, a red team engagement tests whether the SOC would detect a sophisticated attacker exploiting what remains.

Red team findings routinely drive improvements to SIEM detection rules, incident response playbooks, and security awareness training. It’s also recommended to use purple team exercises, which pair red team attackers with the organization’s blue team in a collaborative format to accelerate control tuning in real time.

Work With IOActive for Red Team Engagements and Penetration Testing

With over 25 years of offensive security research and engagements across some of the world’s most complex environments, IOActive has the experience to determine the right methodology for your risk profile and execute it with precision. IOActive’s penetration testing practice goes beyond off-the-shelf tooling, applying an attacker’s perspective and human judgment to chain vulnerabilities, expose business logic flaws, and deliver findings with clear remediation priority. Our red and purple team engagements run multi-vector, goal-based adversary simulations across technical, physical, and human attack surfaces, testing prevention, detection, response, and recovery under realistic conditions.

Talk to an IOActive expert about the right security testing approach for your organization

COLLATERAL | April 17, 2020

IOActive Red and Purple Team Service

Building Operational Resiliency Through Real-world Threat Emulation.

Who better to evaluate security effectiveness – compliance auditors or attackers? Vulnerability assessments and penetration tests are critical components of any effective security program, but the only real way to test your operational resiliency is from an attacker’s perspective.

Our red and purple teams bring you this insight through full threat emulation, comprehensively simulating a full range of specific attacks against your organization – cyber, social, and physical.
We can provide or advise on the creation of continuous, independent, and customized real-world attacker-emulation services that work with your blue team – your own security operations personnel – to prepare them to face the adversaries your enterprise is likeliest to encounter.

get the red/purple team services datasheet