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從 Mozilla 官網下載的 Firefox 帶有追蹤用的標籤

 2 years ago
source link: https://blog.gslin.org/archives/2022/03/20/10609/%e5%be%9e-mozilla-%e5%ae%98%e7%b6%b2%e4%b8%8b%e8%bc%89%e7%9a%84-firefox-%e5%b8%b6%e6%9c%89%e8%bf%bd%e8%b9%a4%e7%94%a8%e7%9a%84%e6%a8%99%e7%b1%a4/
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從 Mozilla 官網下載的 Firefox 帶有追蹤用的標籤

前天看到「Each Firefox download has a unique identifier」這篇報導,就順手貼到 Hacker News 上面了:「Each Firefox download has a unique identifier (ghacks.net)」。

簡單的說就是 Mozilla 在 Firefox 的 binary 裡面加上 download token,後續就可以追蹤使用者:「[meta] Support download token」。

依照報導所提到的,每次下載 binary 都會有不同的 token:

在「Attached file dltoken_data_review.md — Details」裡面有回答更多細節,像是跟 Google Analytics 綁定:

5) List all proposed measurements and indicate the category of data collection for each measurement, using the [Firefox data collection categories](https://wiki.mozilla.org/Firefox/Data_Collection) found on the Mozilla wiki.   

<table>
  <tr>
    <td>Measurement Description</td>
    <td>Data Collection Category</td>
    <td>Tracking Bug #</td>
  </tr>
  <tr>
    <td>A download token that uniquely corresponds to a Google Analytics ID</td>
    <td>Category 4 "Highly sensitive or clearly identifiable personal data"</td>
    <td>Bug 1677497</td>
  </tr>
</table>

我自己重製不出來 (都是被導去 CloudFront),但留言區裡面的 Yuliya 透過 Tor 有重製出來:

I have tried some TOR exit nodes:

Name: Firefox Setup 98.0.1_germany.exe
Size: 55528896 bytes (52 MiB)
SHA256: 2d8164d547d8a0b02f2677c05e21a027dc625c0c1375fd34667b7d039746d400
SHA1: 71302acbee6895b84cf0dfae99050926f2db59ef

Name: Firefox Setup 98.0.1_austria.exe
Size: 55528896 bytes (52 MiB)
SHA256: a139a45dd5737ab981068ca2596b7fdfde15e5d4bc8541e0a2f07a65defd3e4e
SHA1: 28630a0aababa162ca9e7cbca51e50b76b9c3cff

I have labeled the file for the corresponding country of the exit node.

如果不願意換到 Chromium-based 的方案,目前在討論裡看到的替代方案是 LibreWolf,昨天裝起來後發現還行,應該也可以測試看看...

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Google Analytics 會愈來愈不準的問題

在 Hacker News Daily 上看到在討論 Google Analytics 會愈來愈不準的問題:「58% of Hacker News, Reddit and tech-savvy audiences block Google Analytics」,先大概知道 Plausible 也是一個分析工具,宣稱重視隱私以及相關法規 (...),所以網站裡面提到的推論可以看看就好,這次我主要是看數字而已。另外當然,Hacker News 上對這篇文章的討論「Tech-savvy audiences block Google Analytics (plausible.io)」也可以翻翻。 作者先前注意到愈一般性的網站,阻擋率就愈低,但科技相關的網站就會高到失真: In a previous study, I’ve found that less than 10% of visitors block Google Analytics on foodie and lifestyle sites but…

September 1, 2021

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Firefox 試著透過預載 Intermediate CA 降低連線錯誤發生的機率?

在「Preloading Intermediate CA Certificates into Firefox」這邊看到 Mozilla 的人打算在 Firefox 上預載所有的 Intermediate CA,以降低 HTTPS 連線發生錯誤的作法。這點在 Mozilla 的 Wiki 上也有記錄:「Security/CryptoEngineering/Intermediate Preloading」。 的確如文章裡說的,沒有正確放入 Intermediate CA 是個 server 設定上很常見的錯誤。像是前幾天看到「【茶包射手日記】網站憑證無效案例分析」這篇講的摩斯 https://www.mos.com.tw/ 其實就是這個案例,用 SSL Labs 的工具就可以掃出來問題:「SSL Report: www.mos.com.tw (210.59.225.242)」。 問題出在於沒有送出正確的 Intermediate CA(s),所以在 Android 上找不到一條完整的 trust chain: 不過在 Windows 系統內的 CA store 是可以建立出一條完整的 trust chain,所以 Windows 上的…

November 14, 2020

In "Browser"

a611ee8db44c8d03a20edf0bf5a71d80?s=49&d=identicon&r=gAuthor Gea-Suan LinPosted on March 20, 2022March 20, 2022Categories Browser, Computer, Firefox, Murmuring, Network, Privacy, Software, WWWTags analytics, binary, collection, data, download, firefox, google, id, identifier, mozilla, privacy, token, tracking, unique

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