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A comment on Outlook just asked me if I want to upgrade to bigger ads. Parent comment

Re:Outlook just asked me if I want to upgrade to bigger ads by MarkSweep on Friday February 18, 2022 @04:15PM (#30391213)
I think the reason this is not done is it would leak to the website if the user had previously downloaded the same file from a different website.
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Re:Outlook just asked me if I want to upgrade to bigger ads by vanviegen on Friday February 18, 2022 @04:29PM (#30391355)
Sure. And you can do the same thing with a CDN file by timing how long it takes to load. Sub millisecond means cache.
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Re:Outlook just asked me if I want to upgrade to bigger ads by notriddle on Friday February 18, 2022 @05:42PM (#30392139)
It's why newer versions of Firefox and Safari use segmented caches. Which, of course, means that loading fonts from a CDN no longer buys you anything at all.
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Re:Outlook just asked me if I want to upgrade to bigger ads by imajoredinecon on Friday February 18, 2022 @08:25PM (#30393522)
Chrome as well. (The zdnet article above is about Chrome, which shipped this last year.)
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