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    Fox-IT Blog

    blog.fox-it.com · Company blog · on HN since 2011

    Fox-IT's blog publishes security research from a Dutch security firm, covering malware, botnets, and network attacks.

    Visit blogHN submissions
    SecurityNetworking
    What HN says

    HN commenters link its deep dive into the QUANTUM INSERT attack technique and its other older analyses of malware and compromised systems.

    Stats for nerds
    33HN people shared it
    23linked in comments
    141story points
    Oct 2025last shared
    2013people per year2025

    Top posts on HN

    1. 1
      Large botnet cause of recent Tor network overload
      2 people · 79 points · first shared 2013 · 16 comments on HN
    2. 2
      CryptoPHP: Analysis of a hidden threat inside popular content management systems
      2 people · 13 points · first shared 2014 · 1 comments on HN
    3. 3
      Deep dive into QUANTUM INSERT
      7 people · 8 points · first shared 2015 · Discussion on HN
    4. 4
      Detection and recovery of NSA’s covered up tracks
      1 person · 6 points · first shared 2017 · Discussion on HN
    5. 5
      Malvertising on Java.com
      1 person · 6 points · first shared 2014 · Discussion on HN
    6. 6
      Compromising IPv4 networks via IPv6
      1 person · 4 points · first shared 2018 · Discussion on HN
    7. 7
      Malicious advertisements served via Yahoo
      4 people · 3 points · first shared 2014 · Discussion on HN
    8. 8
      Identifying Cobalt Strike team servers in the wild
      2 people · 2 points · first shared 2019 · Discussion on HN
    9. 9
      Critical analysis of Microsoft Operation B71 (Zeus Botnet disruption)
      2 people · 2 points · first shared 2012 · Discussion on HN
    10. 10
      Unencrypted storage of confidential information in Keeper Password & Data Vault
      1 person · 2 points · first shared 2013 · Discussion on HN

    What HN people wrote when they linked it

    • angoragoatsFeb 2024

      Wow, aren't you the fallacy guy. Please, give me more fallacies! I should just change my username to fallaciousgoats.

      How about this: I didn't use the word "knowingly" anywhere in my statement, and in fact I have no earthly idea whether the countless examples [1][2][3][4] of malware being served via ad networks on major websites was done knowingly. My guess is it wasn't?

      So you've got the beginnings of a straw man fallacy here, questioning an argument that I never actually made.

      If you'd like to learn more about why malware shows up on cross-site ad networks, there's a good quick read available at [5].

      [1] https://news.ycombinator.com/item?id=17550808

      [2] https://www.bleepingcomputer.com/news/security/hackers-abuse-google-ads-to-spread-malware-in-legit-software/

      [3] https://www.helpnetsecurity.com/2023/01/18/google-ads-increasingly-pointing-to-malware/

      [4] https://blog.fox-it.com/2014/01/03/malicious-advertisements-served-via-yahoo/

      [5] https://theconversation.com/why-bad-ads-appear-on-good-websites-a-computer-scientist-explains-178268

    • deanclatworthyJan 2014

      It's a little alarming that one of the major online newspapers in the world can reveal such news, yet provide no substantial information on what the malware was, what platforms it infected, and how to detect if it's infiltrated your system, and furthermore remove it.

      From what I read on the guardian, it seems that it's a Java-based exploit:
      http://www.theguardian.com/technology/2014/jan/08/yahoo-malware-turned-europeans-computers-into-bitcoin-slaves

      More info from the original source:
      http://blog.fox-it.com/2014/01/03/malicious-advertisements-served-via-yahoo/

    • sneakJul 2020

      FYI: pervasive mass internet surveillance by the US military with the active cooperation of large US telcos AT&T, Verizon, and others already enables this capability in the US and much of the rest of the world.

      The surveillance allows them to read the TCP sequence numbers or DNS query IDs, and then spoof valid response packets.

      It’s called QUANTUMINSERT.

      https://blog.fox-it.com/2015/04/20/deep-dive-into-quantum-insert/

    • autoexecFeb 2023

      Some older articles:

      https://www.pcworld.com/article/435020/hackers-make-driveby-download-attacks-stealthier-with-fileless-infections.html

      https://money.cnn.com/2013/02/22/technology/security/nbc-com-hacked-malware/index.html

      https://blog.fox-it.com/2014/01/03/malicious-advertisements-served-via-yahoo/

      https://www.cbsnews.com/news/huffpo-readers-hit-with-ransomware-infected-ads/

    • siticSep 2020

      Apparently a lot of systems were backdoored in January (exploits were available before the patches), so even if the patches were installed right away the backdoor is still there [1]. The malware hackers are now slowly processing their long list of compromised systems.

      [1] https://blog.fox-it.com/2020/07/01/a-second-look-at-cve-2019-19781-citrix-netscaler-adc/

    • saycheeseFeb 2017

      >> "The usage of HTTPS in combination with HSTS can reduce the effectiveness of QI. Also using a content delivery network (CDN) that offers low latency can make it very difficult for the QI packet to win the race with the real server."

      Above is from the researchers:
      https://blog.fox-it.com/2015/04/20/deep-dive-into-quantum-insert/

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