"Today, OpenAI announced what it calls content provenance signals across its image ecosystem. In other words, it's tagging its AI-generated images as AI-generated. This is not new. OpenAI and other AI tools have been embedding metadata in AI-generated images since 2024. The problem was that the metadata tagging was pretty easy to defeat. What is new is that OpenAI is upping its image ID security game with some fancy new tech."
"There's a lot going on here. To help put it in perspective, we're going to travel all the way back to 440 BC and one dude's bad hair day. Stega what, now? Steganography is the practice of embedding cryptographic information in plain sight, basically using techniques to conceal messages in such a way that the cryptographic intent of the messages is not immediately apparent. In other words, knowing someone or something is carrying a code is halfway to cracking the code."
"According to modern research, in the fifth century BCE, Herodotus of Halicarnassus, writing in the books Terpsichore and Polymnia of his nine-book Histories, tells the story of how, "Around 440 B.C. Histiæus shaved the head of his most trusted [assistant] and tattooed it with a message which disappeared after the hair had regrown. The purpose was to instigate a revolt against the Persians." Apparently, this technique was used as recently as World War II."
"If you've ever watched a TV detective show where a hidden message is revealed by reading every few letters of an otherwise ordinary note, you've seen a text-based example of steganography. As encryption goes, it's weak. But if you don't know there's a message in the note, you might not try to decrypt it. Steganography has been used in digital images for years to embed text information"
OpenAI announced content provenance signals across its image ecosystem to tag AI-generated images as AI-generated. OpenAI is using C2PA metadata and SynthID watermarks, and it is also adding hidden pixel signals to help identify AI-generated images. Earlier metadata tagging existed but was easier to defeat. A public OpenAI verification tool is also rolling out to support checking provenance signals. Steganography is described as embedding cryptographic information in plain sight so the presence of a message is not immediately apparent. Digital image steganography has been used for years to embed text information, including examples from historical accounts and modern detective-style techniques.
#ai-image-provenance #c2pa-metadata #synthid-watermarking #steganography #content-verification-tools
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