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posted by mrpg on Friday August 17 2018, @12:39AM   Printer-friendly
from the caught-with-their-hands-in-the-cookie-jar dept.

A popular Firefox add-on is secretly logging users' browsing history, according to reports from the author of the uBlock Origin ad blocker and Mike Kuketz, a German privacy and security blogger. The add-on in question is named Web Security and is currently installed by 222,746 Firefox users, according to the official Mozilla Add-ons Portal. The add-on's description claims Web Security "actively protects you from malware, tampered websites or phishing sites that aim to steal your personal data."

Its high install count and positive reviews got the add-on on a list of recommended security and privacy add-ons on the official Firefox blog last week.

But this boost of attention from the Mozilla team didn't go down as intended. Hours after Mozilla's blog post, Raymond Hill, the author of the uBlock Origin ad blocker pointed out on Reddit that the add-on exhibited a weird behavior.

"With this extension, I see that for every page you load in your browser, there is a POST to http://136.243.163.73 Hill said. "The posted data is garbled, maybe someone will have the time to investigate further."

Hill's warning went under the radar for a few days until yesterday, when Kuketz, a popular German blogger, posted an article about the same behavior. Hours later, a user on Kuketz's forum managed to decode the "garbled" data, revealing that the add-on was secretly sending the URL of visited pages to a German server. Under normal circumstances, a Firefox add-on that needs to scan for threats might be entitled to check the URLs it scans on a remote server, but according to a format of the data the add-on was sending to the remote server, Web Security appears to be logging more than the current URL.

The data shows the plugin tracking individual users by an ID, along with their browsing pattern, logging how users went from an "oldUrl" to a "newUrl." This logging pattern is a bit excessive and against Mozilla's Addon Portal guidelines that prohibit add-ons from logging users' browsing history.

Source: Firefox Add-On With 220,000+ Installs Caught Collecting Users' Browsing History


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  • (Score: 1, Offtopic) by MichaelDavidCrawford on Friday August 17 2018, @01:53AM (4 children)

    by MichaelDavidCrawford (2339) Subscriber Badge <mdcrawford@gmail.com> on Friday August 17 2018, @01:53AM (#722640) Homepage Journal

    -ted to register.

    A while back I was toying around not with "domaining" as cybersquatters so generously refer to themselves, but looking for unregistered domains that at one time had lots of organic links.

    My plan was to keep all those domains _forever_, and to redirect all their former URLs to pages on my own sites.

    I found one that was obviously valuable so I decided to register it, but didn't actually try until a few hours later. By that time some manner of really, really big domainer had snatched it out from under me.

    I blamed the PageRank/Alexa add-on I was using and so removed it. I contemplated taking some further action but at the time I just didn't have the headspace to deal with it.

    It happens that a certain once-popular domain has been available for at least five years. Sucks to be a Dot-Com Startup! I'll go register it after I sing on the street [warplife.com] for three hours or so.

    Twice now I've gotten tipped $20 bills!

    Good Times.

    --
    Yes I Have No Bananas. [gofundme.com]
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  • (Score: 3, Interesting) by Anonymous Coward on Friday August 17 2018, @04:31AM (3 children)

    by Anonymous Coward on Friday August 17 2018, @04:31AM (#722691)

    It can depend on how you checked them. Did you do whois through ICANN or another place? Did you just browser to random domain names to see if it resolved? Also, this is a fun way to mess with registrars: I hate godaddy, so for fun, I've searched for the same unregistered domain names there. You can guess who ends up registering and parking the domain name after a few attempts.

    • (Score: 2) by MichaelDavidCrawford on Friday August 17 2018, @04:51AM

      by MichaelDavidCrawford (2339) Subscriber Badge <mdcrawford@gmail.com> on Friday August 17 2018, @04:51AM (#722693) Homepage Journal

      So there is some possibility that the fault was an inconsistent whois cache.

      As I proceeded further into this project, I stumbled across the advice that the only truly reliable way to determine if a domain is available is to register it.

      At the time I didn't have the Samoleons to do that, but if I ever take this up again that's what I'll do.

      --
      Yes I Have No Bananas. [gofundme.com]
    • (Score: 1) by nitehawk214 on Friday August 17 2018, @03:34PM (1 child)

      by nitehawk214 (1304) on Friday August 17 2018, @03:34PM (#722832)

      I think registrars are allowed to do "domain name sampling" where they can register it for free for a limited time. But usually just long enough to force the person who really wants it to pay through the nose.

      --
      "Don't you ever miss the days when you used to be nostalgic?" -Loiosh
      • (Score: 1, Interesting) by Anonymous Coward on Friday August 17 2018, @06:31PM

        by Anonymous Coward on Friday August 17 2018, @06:31PM (#722888)

        Yeah, but they can only sample domains a certain number of times in a year, for certain maximum periods, and they have to announce it. So you have to spread it out to avoid those limits.