Fickle PDFs: exploiting browser rendering discrepancies Imagine the CEO of a random company receives an email containing a PDF invoice file. In Safari and MacOS Preview, the total price displayed is £399. After approval, the invoice is sent to the accounti

Today I found out that my article on #KoboldLetters inspired this work on #FicklePDFs: portswigger.net/research/fickle-pdfs-exp...