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pcwalton's profile
Patrick Walton
Patrick Walton
Patrick Walton
@pcwalton

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Patrick Walton

@pcwalton

Research engineer at Mozilla

San Francisco, CA
pcwalton.github.io
Joined November 2009

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    1. Pinboard‏ @Pinboard 24 Aug 2018
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      Replying to @pcwalton @spongeclipper

      As @matthew_d_green points out, the lock screen is functionally the last line of defense on an Android phone, so "it's almost not broken" is not a reassuring consolation. I agree that the phones Google makes are the safest, but they are not safe enough, and that is on Google

      2 replies 0 retweets 3 likes
    2. Patrick Walton‏ @pcwalton 24 Aug 2018
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      Replying to @Pinboard @spongeclipper @matthew_d_green

      Read the paper. Nexus devices were immune to the lock screen bypass. Lock screen bypass was specific to some OEM phones.

      1 reply 1 retweet 7 likes
    3. Matthew Green‏ @matthew_d_green 24 Aug 2018
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      Replying to @pcwalton @Pinboard @spongeclipper

      It’s not totally a slam dunk though.pic.twitter.com/q32Ip1g6HK

      1 reply 0 retweets 3 likes
    4. Patrick Walton‏ @pcwalton 24 Aug 2018
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      Replying to @matthew_d_green @Pinboard @spongeclipper

      Well, if we’re talking about theoretical vulnerabilities, couldn’t iBoot be theoretically vulnerable too? I still think Apple is being given too much of a pass here…

      1 reply 0 retweets 2 likes
    5. Matthew Green‏ @matthew_d_green 24 Aug 2018
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      Replying to @pcwalton @Pinboard @spongeclipper

      Well, there’s a specific citation there. And it refers to a bunch of concrete vulns (now hopefully fixed!) in Nexus phones. And yes, Apple deserves their own crap (think GrayKey) but the Android stuff seemed sloppier.

      2 replies 0 retweets 3 likes
    6. Billy Ray Valentine‏ @spongeclipper 24 Aug 2018
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      Replying to @matthew_d_green @pcwalton @Pinboard

      I guess, but vuln counting as a method of comparison is poor. Maybe comparing apis (eg file encryption) gives you a sense of platform priorities, but even that’s tough. I’d recommend iOS because it’s hard to know *which* android oems are safe, but not because “upper management.”

      1 reply 0 retweets 2 likes
    7. Matthew Green‏ @matthew_d_green 24 Aug 2018
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      Replying to @spongeclipper @pcwalton @Pinboard

      I don’t think that’s valid at all. Apple has consistently led on security and privacy issues. The encryption API we discussed is a great example of that. A huge amount of engineering effort went into a feature that only a few apps use & that also seriously pissed off the FBI.

      1 reply 0 retweets 5 likes
    8. Matthew Green‏ @matthew_d_green 24 Aug 2018
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      Replying to @matthew_d_green @spongeclipper and

      That isn’t the kind of decision that turns on low level employees having passions, or some vagaries of hardware. Android eventually copied many aspects of Apple’s FBE, but only after several years — and incompletely.

      1 reply 0 retweets 3 likes
    9. Matthew Green‏ @matthew_d_green 24 Aug 2018
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      Replying to @matthew_d_green @spongeclipper and

      And vulnerability counting isn’t the whole story. The whole story is that Apple has much more control of the hardware, while Google (even in its own phones) has largely been assembling their own (much less widely sold) product lines from other parts.

      1 reply 0 retweets 5 likes
    10. Matthew Green‏ @matthew_d_green 24 Aug 2018
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      Replying to @matthew_d_green @spongeclipper and

      I’m not gonna go too far down this line because I’m not a hardware expert and it’s just speculation. But it’s hard for me to believe that Google and Apple are getting the same economies of scale on security spending, given the relative sales of their respective product lines.

      2 replies 0 retweets 2 likes
      Patrick Walton‏ @pcwalton 24 Aug 2018
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      Replying to @matthew_d_green @spongeclipper @Pinboard

      I think you can get better security through controlling the whole stack. But that doesn’t mean you’re under some moral obligation to. It’s silly to suggest that Google employees should be forming a labor union to demand more vertical integration in their product lines.

      2:31 PM - 24 Aug 2018 from South Beach, San Francisco
      • 3 Likes
      • Irvan Putra You and 52 others Billy Ray Valentine
      1 reply 0 retweets 3 likes
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        2. Matthew Green‏ @matthew_d_green 24 Aug 2018
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          Replying to @pcwalton @spongeclipper @Pinboard

          Wha?

          1 reply 0 retweets 2 likes
        3. Patrick Walton‏ @pcwalton 24 Aug 2018
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          Replying to @matthew_d_green @spongeclipper @Pinboard

          (@Pinboard has been agitating for a long time for Google employees to unionize to demand better security for Android, which is unreasonable.)

          2 replies 0 retweets 2 likes
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