At PH-Neutral, I recently presented a bunch of information about how no two PDF readers will see a PDF file in the same way. Which is useful if you’re trying to sneak an exploit past a smart A/V scanner. [Unfortunately, most A/V scanners are not even smart enough to find an exploit sitting in easy-to-read plaintext at the top of a well-formed file.]
Someone took a picture of one of my slides, which has been quite popular, based upon the number of retweets and views.
So, I’ll explain how this works, for the benefit of everyone who wasn’t there at the time&hellip
