隨著安全漏洞的抬頭，基于硬件的MCU解決方案占據(jù)中心舞臺(tái)

　　幾乎所有基于MCU的嵌入式系統(tǒng)-汽車，無(wú)人機(jī)，USB棒，車庫(kù)門開啟器，數(shù)碼相機(jī)，甚至耗材，如打印機(jī)墨盒-容易受到安全攻擊。

　　越來(lái)越多的記錄的安全漏洞，使用物聯(lián)網(wǎng)（物聯(lián)網(wǎng)）作為入口點(diǎn)，提高了安全意識(shí)，在設(shè)計(jì)界物聯(lián)網(wǎng)連接設(shè)備。通常情況下，故事涉及違規(guī)影響消費(fèi)者和最終用戶。然而，其他類型的安全威脅至少同樣重要的設(shè)計(jì)工程師-最涉及盜竊，篡改，或破壞知識(shí)產(chǎn)權(quán)。

　　互聯(lián)網(wǎng)可能已經(jīng)成為一個(gè)基于MCU的系統(tǒng)中最流行的切入點(diǎn)，但它遠(yuǎn)遠(yuǎn)不是唯一的一個(gè)。無(wú)擔(dān)保或未充分擔(dān)保的診斷端口一直是潛在的脆弱-作為汽車行業(yè)發(fā)現(xiàn)，主要是通過(guò)活動(dòng)的“調(diào)諧器”社區(qū)。任何無(wú)線（或有線）通信鏈路也可以用作入口點(diǎn)。

　　Even the unattached MCU device （or its associated ROM） are subject to tampering and IP theft. Among other techniques， reverse-engineering specialists have developed techniques in which the chip’s mask layers are carefully ground down until the ROM layer is exposed. By closely analyzing which switches have been blown， the firmware code contained in them can be deduced.

　　MCU vendors have responded with multiple approaches to enhancing security for the firmware that runs their devices. Although these measures make firmware more secure， implementing them requires that the system design team understand how they work – and implement them correctly. This involves the extra effort， time， and cost for the system’s bill of materials （BOM）。 Computer-intensive security measures such as data encryption can require a more powerful MCU.