Percentage-based URL encoding ... based URL encoding – a basic URL-encoding technique in which normal ASCII characters (i.e., “abc” and “123”) are converted into a string that starts ...

capabilities to detect QR code inside images and then inspect the URLs to which they point. The ASCII method makes OCR-based detection useless because a string of special characters in emails will ...

The invisible characters, the result of a quirk in the Unicode text encoding ... of ASCII smuggling allowed his POCs to stow the confidential data in an invisible string appended to the URL.