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marcan42's profile
Hector Martin
Hector Martin
Hector Martin
@marcan42

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Hector Martin

@marcan42

If it ain't broke, I'll fix it! I'm porting Linux to Apple Silicon Macs at @AsahiLinux. http://patreon.com/marcan  | http://github.com/sponsors/marcan 

Tokyo, Japan
marcan.st
Joined May 2009

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    1. Bader Zaidan‏ @BSZaidan 24 May 2018
      • Report Tweet
      • Report NetzDG Violation

      Bader Zaidan Retweeted Hector Martin

      Threat Model? The threat is EU regulation. Mitigate by 'pseudoanonymisation', as called for by Reg. (EU) 2016/679. Technically this makes no sense. Legally, it's perfect to avoid a €20 million lawsuit.https://twitter.com/marcan42/status/999643376168325121 …

      Bader Zaidan added,

      Hector Martin @marcan42
      I love things like this https://github.com/masonicboom/ipscrub … "NOTE: this is not a cryptographically secure RNG, but for the following threat model, that is ok." AKA "anyone can trivially deanonymize all IP addresses with the available information". Good job. random(). Not Even Once.
      1 reply 0 retweets 0 likes
    2. Hector Martin‏ @marcan42 24 May 2018
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      Replying to @BSZaidan

      Legally it's nonsense, because if I can extract the original IP addresses, it's not anonymisation, it's masturbation. If I can crack the hashes on a laptop in a few minutes, for zero cost other than electricity, any competent judge will rule that it was not effectively anonymisedpic.twitter.com/ARIxlvh9gk

      2 replies 1 retweet 1 like
    3. Hector Martin‏ @marcan42 24 May 2018
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      Replying to @marcan42 @BSZaidan

      Also, even if such a stupidly broken scheme would pass legal muster, there is *no freaking reason* to not just fix the problem instead of exposing yourself. There is absolutely no excuse for bad crypto and bad random number generators. Period.

      1 reply 0 retweets 1 like
    4. Bader Zaidan‏ @BSZaidan 24 May 2018
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      Replying to @marcan42

      Might as well fork it.

      1 reply 0 retweets 0 likes
    5. Hector Martin‏ @marcan42 24 May 2018
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      Replying to @BSZaidan

      I filed an issue. I have no reason to believe the author won't fix it, yet. Just complaining about the orig version. I'm not actually interested in the plugin myself, because I don't need stats and hashed IPs are not useful to me. I just started truncating the last octet for now.

      1 reply 0 retweets 1 like
    6. Hector Martin‏ @marcan42 24 May 2018
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      Replying to @marcan42 @BSZaidan

      I.e. hashed IPs are only useful if you want to do precise correlation of lots/all logs in a time window, but the only reason I keep logs (for a limited time) is for debugging and abuse, and for that I care more about knowing the ISP/country than individual IPs.

      1 reply 0 retweets 0 likes
    7. Bader Zaidan‏ @BSZaidan 24 May 2018
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      Replying to @marcan42

      Short of encrypting log files, there's nothing I'm aware of that can do what GDPR requires. That's where this one falls short, too.

      1 reply 0 retweets 0 likes
    8. Hector Martin‏ @marcan42 24 May 2018
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      Replying to @BSZaidan

      I don't think anyone (without a lawyer army) *knows* what you can/can't, must/must not do for GDPR compliance yet. For corporate stuff, it's the lawyers' problem, not mine. Personal stuff, I don't use trackers/ads and have reduced log retention, waiting for better info ¯\_(ツ)_/¯

      1 reply 0 retweets 0 likes
    9. Bader Zaidan‏ @BSZaidan 24 May 2018
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      Replying to @marcan42

      We won't know until the first lawsuit. In my case, I'm retaining logs for 7 days for 'reasons of service abuse' and then deleting it until further notice.

      1 reply 0 retweets 0 likes
      Hector Martin‏ @marcan42 24 May 2018
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      Replying to @BSZaidan

      I went with 14 days for now (and only 24 bits of IPv4s, 48 of IPv6s). We'll see what happens.

      10:28 AM - 24 May 2018
      • 1 Like
      • Bader Zaidan
      1 reply 0 retweets 1 like
        1. New conversation
        1. rappet‏ @rappet_ 24 May 2018
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          Replying to @marcan42 @BSZaidan

          48 bits could be too many bits. Many providers give a /48 subnet per customer.

          1 reply 0 retweets 0 likes
        2. Hector Martin‏ @marcan42 25 May 2018
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          Replying to @rappet_ @BSZaidan

          Could be, though AIUI the whole GDPR thing is about natural people, and assigning a /48 to an individual is rare. My hosting provider gives me a (single) /48 for me to use across all my servers, but I haven't seen any residential ISPs doing that for individuals.

          1 reply 0 retweets 0 likes
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