1/ I am extremely time-pressed on my #phdlife right now, so I can't verify this. But, at least anecdotally, I've been seeing an increase in what could accurately be described as social media story replay attacks: an old viral story going viral again a year (or so) later.
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2/ It makes sense. Implicitly, you have evidence of salience: it already went viral once. Immediately after the first viral episode, salience falls; but, given information overload, the familiar becomes unfamiliar quickly and salience recovers as it does.
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3/ But, it's not merely the high probability of repeat virality that makes it attractive as an attack -- it's that you get to *observe* the social effects through the social graph. Not predict -- *observe*.
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4/ Which groups does this antagonize? What are the effects on group-partitioned beliefs wrt the topic? What are the effects on their stereotypes of the structured opposition? If the effects match what you want as an attacker, just wait a while then replay the story.
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5/ "Well, that's not right. It won't have the same social effects again, because the beliefs already integrated the information." Maybe. But, my guess is that the effects attenuate *with* repeat salience. So, costless replays do what you want until they do nothing at all.
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6/ As far as asymmetries go, that's an almost ideal attack. - Heads, I win. - Tails, I toss again.
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