AIGuardPDF: How to Protect Documents from AI with Adversarial PDF Security

In today’s rapidly evolving artificial intelligence landscape, AI systems can effortlessly read and analyze our document contents. Whether it’s corporate confidential files, academic research papers, or personal private materials, various AI chatbots and intelligent agents can scan, analyze, and utilize them for model training. Facing this reality, protecting the information security of human documents has become an urgent problem requiring solutions. This article introduces an innovative PDF document protection technology—AIGuardPDF—that can effectively prevent AI systems from correctly reading document content while maintaining human readability. Technical Background and Challenges With the proliferation of large language models like ChatGPT, Claude, and Perplexity, …