The Rise of ‘Purple Teaming’
The next generation of penetration testing represents a more collaborative approach to old fashioned Red Team vs. Blue Team.
In 1992, the film Sneakers introduced the term “Red Team” into popular culture as actors Robert Redford, Sydney Poitier, Dan Aykroyd, David Strathairn, and River Phoenix portrayed a team of security experts who hire themselves out to organizations to test their security systems by attempting to hack them.
This was a revolutionary concept at the time — the term “penetration test” didn’t even exist yet, and the idea of a friendly security team trying to break through a company’s defenses wasn’t exactly commonplace. Today, penetration testing is an important part of any cybersecurity system, and both internal and external Red Teams play a critical role in that process.
But they don’t do it alone. Organizations often employ “Blue Teams,” referring to the internal security team tasked with defending against both real and simulated attacks. If this raises your curiosity about whether and how closely Red Teams and Blue Teams collaborate in security testing, then you’ve pinpointed the fast-rising cybersecurity trend of “Purple Teaming.”
What Makes Purple Teaming Different?
For years, organizations have run penetration tests similarly: The Red Team launches an attack in isolation to exploit the network and provide feedback. The Blue Team typically knows only that an evaluation is in progress and is tasked to defend the network as if an actual attack were underway.
The most important distinction between Purple Teaming and standard Red Teaming is that the methods of attack and defense are all predetermined. Instead of attacking the network and delivering a post-evaluation summary of finding, the Red Team identifies a control, tests ways to attack or bypass it, and coordinates with the Blue Team in ways that either serve to improve the control or defeat the bypass. Often the teams will sit side by side to collaborate and truly understand outcomes.
The result is that teams are no longer limited to identifying vulnerabilities and working based on their initial assumptions. Instead, they are testing controls in real time and simulating the type of approach that intruders are likely to utilize in an actual attack. This shifts the testing from passive to active. Instead of working to outwit each other the teams can apply the most aggressive attack environments and conduct more complex “what-if” scenarios through which security controls and processes can be understood more comprehensively and fixed before a compromise.
How Deception Technology Adds Value to Penetration Testing
Part of what makes Red Teaming and Purple Teaming so valuable is they provide insight into the specific tactics and approaches that attackers might use. Organizations can enhance this visibility by incorporating deception technology into the testing program. The first benefit comes from detecting attackers early by enticing them to engage with decoys or deception lures. The second comes from gathering full indicators of compromise (IOCs) and tactics, techniques, and procedures (TTPs) into lateral movement activity. This significantly enhances visibility into how and when attackers circumvent security controls, enriching the information that typically results from these exercises.
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