| Assumed breach | An engagement that opens from a foothold granted in advance instead of one we have to earn. The budget goes on what an attacker does after getting in, which is where most estates actually fail. |
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| Attack path | The ordered chain of steps that carried us from initial access to the objective. Delivered as a graph, not a list, because the order is the finding. |
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| Authorization letter | The signed document that makes the engagement lawful, naming the scope, the window and the people who approved it. Carried by every operator. |
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| C2 | Command and control. The channel a foothold uses to reach its operator. Whether your controls see it, and how long they take to, is one of the things an engagement measures. |
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| Crown jewel | The system or data whose loss would genuinely hurt. Named by you at scoping, and the thing the engagement is pointed at. |
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| Deconfliction | The agreed channel for answering one question quickly: is this us, or is this a real intrusion. Held by the white team for the duration of the engagement. |
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| Initial access | The first foothold inside the estate. A pretext someone accepted, an exposed service, a supplier path. |
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| Lateral movement | Moving between systems once inside, usually with credentials or trust relationships instead of exploits. It rarely looks like an attack to tooling. |
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| Objective-based | Scoped around reaching a named outcome instead of enumerating a system. The difference between proving an estate can be traversed and listing what is wrong with it. |
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| Persistence | Keeping access across reboots, credential changes and cleanup. Its detection is a separate question from the detection of initial access. |
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| Pretext | The story that makes a social engineering approach plausible to the person receiving it. Agreed in advance and kept within the safety rules. |
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| Privilege escalation | Gaining rights beyond those the foothold started with, either on one host or across the domain. |
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| Purple Team | Red and blue working the same timeline together, with detection tooling open, so each technique ends as a detection your team keeps. |
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| Retest | A scoped re-run after remediation, confirming the specific findings are closed instead of re-running the whole engagement. |
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| Rules of engagement | The written limits: what is in scope, what is off limits, the hours, the techniques excluded, and what happens if something breaks. |
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| TTPs | Tactics, techniques and procedures. The vocabulary MITRE ATT&CK uses, and the vocabulary the deliverable is written in. |
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| White team | The small group on your side who know the engagement is running. They hold the authorization letter and the deconfliction channel, and they are deliberately not the people being tested. |
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