Usually, people are used to the fact that images, clips or text can be left open to protect sensitive information and prevent it from being leaked. But recently a security researcher said on his personal blog that he has successfully cracked the blur algorithm to recover text or image information in it.
The recovery algorithm comes from Dan Petro, head of research at security firm Bishop Fox, and according to his blog post, users shouldn’t use traditional methods of obfuscating the data they need. protected. On his personal blog, he released a tool that can do the blur removal. And it really did the job of recovering the blurred text.
In the example, even a complex blurred text was restored. And its operation is not complicated, just install and start it up and you can put it into use. Not that there are no tools to crack the blurred data, but the way those tools work is not really as effective as what the above algorithm does.
The tool adopts a matching algorithm to find the closest text to the original text, without the “text distortion” problem. In addition, Dan also said, just blurred images similar to text can be cracked with the help of this tool, which shows that this software has the most flexibility. determined.
If you are really afraid of leaks, the author of the above tool recommends that it is best to use a black image that covers the entire text or image. No pixelation, no blurring, nothing that can leak your information.
