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382 points DamonHD | 2 comments | | HN request time: 0.001s | source
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wlesieutre ◴[] No.43697826[source]
> If I hadn't moved around my Finder window in the video, I don't think it would've worked. You might get a couple letters right, but it would be very low confidence.

> Moving forward, if I do have sensitive data to hide, I'll place a pure-color mask over the area, instead of a blur or pixelation effect.

Alternately - don't pixelate on a stationary grid when the window moves.

If you want it to look nicer than a color box but without giving away all the extra info when data moves between pixels, pixelate it once and overlay with a static screenshot of that.

For bonus points, you could automate scrambling the pixelation with fake-but-real-looking pixelation. Would be nice if video editing tools had that built in for censoring, knowing that pixelation doesn't work but people will keep thinking it does.

replies(2): >>43697858 #>>43698564 #
1. IshKebab ◴[] No.43698564[source]
Yeah this scenario is purposefully chosen specifically to make this attack possible. It's basically irrelevant in the real world.
replies(1): >>43698782 #
2. geerlingguy ◴[] No.43698782[source]
Someone's already emailed me the depixelated version of the paper I'm holding in the video attached to this blog post.