You don't even have to read the paper, it's in the FAQs: "Can't you just apply some filter, or compression, or blurring algorithm, or add some noise to the imag

You don't even have to read the paper, it's in the FAQs: "Can't you just apply some filter, or compression, or blurring algorithm, or add some noise to the image to destroy image cloaks?" Short answer: No not really. Long answer: Look at the FAQs :)