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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. Matthew Green‏ @matthew_d_green 23 Jan 2019
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      Replying to @justinschuh

      Why not just curate extensions better? Or trust users with the risk of malicious extensions rather than forcing them into a ridiculous per-site authorization they may not want?

      3 replies 0 retweets 24 likes
    2. Tavis Ormandy‏Verified account @taviso 23 Jan 2019
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      Replying to @matthew_d_green @justinschuh

      Reviewing a non-trivial extension takes a professional vulnerability researcher like me 2-3 days, it is way beyond the current state of the art of program analysis to automate. Curation can help eliminate trivial junk, but is not a good solution.

      2 replies 3 retweets 18 likes
    3. Matthew Green‏ @matthew_d_green 23 Jan 2019
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      Replying to @taviso @justinschuh

      There are what, a dozen ad-blocker extensions that represent 97% of blocker usage? Maybe 5? But presumably nobody can afford to review these and grant exceptions?

      4 replies 1 retweet 20 likes
    4. Billy Ray Valentine‏ @spongeclipper 23 Jan 2019
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      Replying to @matthew_d_green @taviso @justinschuh

      I can see the headline now: "Google Bans Competition in Adblock Market". Restricting users to the 5 biggest/established players has its own problems.

      1 reply 0 retweets 4 likes
    5. Justin Schuh  😷‏ @justinschuh 23 Jan 2019
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      Replying to @spongeclipper @matthew_d_green @taviso

      Yeah, this is why I'm not comfortable with special casing the big players. It creates perverse incentive structures and implicitly penalizes the smaller players, startups, and disruptors.

      2 replies 0 retweets 3 likes
    6. Matthew Green‏ @matthew_d_green 23 Jan 2019
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      Replying to @justinschuh @spongeclipper @taviso

      We can’t have a general exception for add blockers. But regrettably we can’t have specific exceptions for ad blockers. So we can’t have ad blockers. 🤷‍♀️

      3 replies 0 retweets 9 likes
    7. Justin Schuh  😷‏ @justinschuh 23 Jan 2019
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      Replying to @matthew_d_green @spongeclipper @taviso

      That assertion doesn't ring true. Ad blockers will still work, but certain types of content manipulation that some ad blockers rely on for specific features will have to be done differently in the future.

      1 reply 0 retweets 2 likes
    8. Matthew Green‏ @matthew_d_green 23 Jan 2019
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      Replying to @justinschuh @spongeclipper @taviso

      How well will those other techniques work? Advertising constantly evolves, and these techniques aren’t used because they’re fun.

      2 replies 0 retweets 10 likes
    9. Tavis Ormandy‏Verified account @taviso 23 Jan 2019
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      Replying to @matthew_d_green @justinschuh @spongeclipper

      These techniques are easy to abuse, get wrong and slow. Designing effective alternatives that are powerful, but less easy to abuse, harder to get wrong and fast seems totally reasonable to me. Isn't that what you cryptographers do with your libraries?

      1 reply 1 retweet 7 likes
    10. Matthew Green‏ @matthew_d_green 23 Jan 2019
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      Replying to @taviso @justinschuh @spongeclipper

      Are you designing more effective techniques, like Apple is?

      2 replies 1 retweet 6 likes
      Patrick Walton‏ @pcwalton 23 Jan 2019
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      Replying to @matthew_d_green @taviso and

      I saw a suggestion to use something like eBPF, which seems like the obvious right solution to me given the expressed constraints. Though, IMO, proposals coming from the Chrome team tend to take the “everything must be async” principle to a counterproductive extreme.

      8:46 AM - 23 Jan 2019
      0 replies 0 retweets 0 likes

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