Phishing simulations test how well your staff spot a fake. Red team tests check your defenses once an attacker is already inside. You need both to get a true picture of your security. Together, they show where your people, processes and technology really stand.
What Each One Does, and How They Differ
- Phishing simulations: tests you can measure and repeat. They show how people react to realistic phishing emails. You learn the click rate, the report rate and how people improve over time.
- Red team tests: an attack on several layers with a set goal, such as "get into the finance system" or "steal customer data". You learn how well your security and IT teams detect and respond.
Why You Need Both
A Realistic View of the Threat
Attackers mix methods. They use phishing to get in and stolen credentials to stay. Then they move sideways through the network and take data out. Email training tests just one link in this chain. Red team tests show whether the whole chain of defense holds or breaks.
Finding Gaps in Technology and Process
Red teaming finds gaps that phishing tests can't:
- weak passwords and missing MFA,
- poor network segmentation,
- blind spots in EDR tuning,
- slow detection by the SOC.
The red team also sees how your incident response works in practice. That is often the most valuable lesson.
Awareness Meets Engineering
Results from phishing simulations improve your awareness content and email gateway rules. Results from red team tests improve detection rules, pipeline hardening and incident response playbooks. The feedback loop only closes when you plan both together.
Help With Compliance
Many standards ask for regular security tests: ISO 27001, NIS 2, BAIT, VAIT and TISAX. If you document how phishing simulations and red team tests work together, you show this far more clearly than with one-off mandatory audits.
How to Run Phishing Simulations Well
- Run campaigns every quarter at different levels of difficulty, not once a year.
- Fit the scenario to the role: finance gets invoice or BEC lures, IT gets admin alerts, HR gets fake job applications.
- Give people who click a short lesson right away. Never shame anyone in public.
- Track results over time: click rate, report rate and time to report.
- Leaders should explain the program openly. Otherwise simulations feel like traps.
How to Run Red Team Tests Well
- Clear goals: aim at a goal ("get into system X"), not "test everything".
- Rules of engagement: scope, time window, escalation paths and systems that are off limits.
- Purple teaming adds value: joint reviews with the internal SOC ("blue team") turn findings into detection rules.
- Documented steps: every action can be traced, and the root cause of every finding is clearly described.
- Retests: you must prove improvements, not just claim them.
Conclusion
Phishing simulations and red team tests don't replace each other. They fit together. Run both on a regular basis and plan them together. Then you get an honest view of your security level and a clear plan to improve it. In short: attackers mix their methods, so your defense should too.