Recently, the Shmoo Group discovered that Firefox is vulnerable to precisely the exploit that i predicted in my 2002 paper—Ping

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By this logic we should stop using language!—Ian

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It seems feasible to me to choose (or design) a font that would make all of the 7-bit printable ASCII characters clearly distinguishable.—Ping

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Render non 7-bit printable ASCII characters in a different color. Or with a different color background.—Mike

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How do you render a zero-width non-breaking space in a different colour?—Ping

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Problem if relying on differently colored characters, not if using background color covering some minimum width for each non-P7ASCII character.—Mike