The 3D printing market has experienced significant growth in recent years, with an estimated revenue of 15 billion USD for 2025. Cyber-attacks targeting the 3D printing process whether through the machine itself, the supply chain, or the fabricated components are becoming increasingly common. One major concern is intellectual property (IP) theft, where a malicious attacker gains access to the design file. One method for carrying out such theft is through side-channel attacks. In this work, we investigate the possibility of IP theft via acoustic side channels and propose a novel method to protect 3D printers against such attacks. The primary advantage of our approach is that it requires no additional hardware, such as large speakers or noise-canceling devices. Instead, it secures printed parts by minimal modifications to the G-code.

翻译：近年来，3D打印市场经历了显著增长，预计2025年收入将达到150亿美元。针对3D打印过程的网络攻击——无论是通过机器本身、供应链还是制造部件——正变得越来越普遍。一个主要关切是知识产权盗窃，即恶意攻击者获取设计文件。实施此类盗窃的一种方法是通过侧信道攻击。在本研究中，我们探讨了通过声学侧信道进行知识产权盗窃的可能性，并提出了一种新颖的方法来保护3D打印机抵御此类攻击。我们方法的主要优势在于无需额外硬件，如大型扬声器或降噪设备。相反，它通过对G代码进行最小修改来确保打印部件的安全性。