Bypassing Watermark Implementations Kulkan Security 9 min read · Jun 4, 2025 -- 1 Listen ShareZoom image will be displayed Bypassing Watermark ImplementationsIntroductionI’ve executed penetration testing of multiple applications in the past, some of which offered among their features the ability to protect online streaming of assets with a Watermark, and each implementation had its own peculiarities. I’m hoping the information contained in this post will either help the reader improve the security of their implementations, or help testers and developers improve the security of their [customer] implementations. Sample Watermark implementations and bypassesThis section covers a series of Watermark implementations I’ve taken a shot at during penetration testing in the past; they do not represent a complete list of alternatives — you will likely run into so many more! When the User becomes the AttackerIt is a typical mistake in client-side Watermark implementations to forget that the attacker is (with exceptions, e.g. An m3u8 file is highly configurable and can support multiple resolutions, audio streams, and more.