考虑“威胁建模”的原理非常有用。威胁建模是基于一种假设，即每个系统都有值得保护的固有价值。然而，因为这些系统是有价值的，他们对内部或外部威胁也是开放的，这些威胁能够且经常给终端产品带来损害。设计完成后的安全漏洞常常是无法修正的，且危及投入的资金和开发资源，因此需要在设计周期的初始阶段增强对安全评估的需求，并在整个设计周期进行监测和重复修正。本质上，我们可以把威胁模型定义为：“识别一组可能的攻击，以便考虑配合一套彻底的风险评估策略。”有了威胁模型，我们就能评估攻击的概率、潜在危害和优先级。
Pico SLA-32
N 164-423750 SCCD30 164-398456
Schneider LTMR27MFM
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MicroE systems complies with 21CFR(J) 100-00129
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T hnology 80 Model 24 900861/B 800095-A
N 164-423750 SCCD30 164-398456
AGIE ADD-04
Mitsubishi Input Output Unit A1SH42
Schneider LTMR27MFM
Schneider LTMR08MFM
MicroE systems complies with 21CFR(J) 100-00129
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25-00144-02
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keypad for Jouan CR4-12 85210058
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82852411A-3054 82852412B-0001 BD01011
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