Jun Kokatsu

@shhnjk

Hacking the Web and Browsers. Securing Edge by breaking it. Opinions are my own and not the views of .

WA, USA
Vrijeme pridruživanja: ožujak 2013.

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  1. Prikvačeni tweet
    19. stu 2019.

    I presented about Site Isolation in Google's event called 🙂 / "The world of Site Isolation and compromised renderer" Slide: Video:

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  2. proslijedio/la je Tweet
    26. sij

    As I have no cool new findings, lets start the year with an old IE bug - bypassing Content-Disposition: attachment with mhtml:

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  3. proslijedio/la je Tweet
    22. sij

    Apple/Safari Intelligent Tracking Prevention is a mechanism intended to improve privacy. It was found to have privacy vulnerabilities allowing sites to track the user (and fingerprint), and to stealing web browser history of a user. Incredible find.

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  4. proslijedio/la je Tweet
    22. sij

    I'm happy to welcome and to the Vulnerability Research Team!

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  5. 18. sij
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  6. 15. sij
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  7. 10. sij

    セキュリティを学び始めて、好奇心旺盛な人にはブラウザのハッキングをお勧めします。好きなだけハッキングしても自分のPC内なので怒られないし、ブラウザベンダーに報告すれば勉強になるフィードバックも沢山貰える。

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  8. proslijedio/la je Tweet
    9. sij

    My team is once more hiring vulnerability researchers for our Redmond WA office. This is for low-level OS/platform security research work on Windows and Azure. More details on what we do at . Apply directly at or DM me if interested!

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  9. 26. pro 2019.

    The most useful document of the year for me was Rule of 2😎 Thanks and all for making such a great document👏

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  10. 24. pro 2019.

    Great find by as always 😊And these are the only valid reports we’ve got so far! Try new Edge and send us bugs 🙏

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  11. proslijedio/la je Tweet
    19. pro 2019.

    Presentation about the team and our Bug Hunters.

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  12. 12. pro 2019.

    Nice, and valid solution!!! But patched 😆

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  13. 12. pro 2019.

    I'm curious who can solve this challenge😀

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  14. proslijedio/la je Tweet
    9. pro 2019.
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  15. 6. pro 2019.

    Good thing people are looking at <portal>😊 It also introduces new way to pass data across origin (just like postMessage) where you can't tell which origin sent the data😂

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  16. 3. pro 2019.

    LOL, read the summary first and then read the actual report :D The report is classic :D

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  17. 27. stu 2019.

    Do you love design issues, memory corruption, or IPC/sandbox in the browser? Let’s work together to find bugs in Edge and Chromium :)

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  18. 25. stu 2019.
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  19. 21. stu 2019.
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  20. 19. stu 2019.

    Just FYI, some bugs in LastPass extension, RSS subscription extension, ChromeVox Classic extension, and Adblock extension are not yet fixed. But all of them agreed with publishing my talk (which is great)🙂

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