Skip to content
By using Twitter’s services you agree to our Cookies Use. We and our partners operate globally and use cookies, including for analytics, personalisation, and ads.

This is the legacy version of twitter.com. We will be shutting it down on June 1, 2020. Please switch to a supported browser, or disable the extension which masks your browser. You can see a list of supported browsers in our Help Center.

  • Home Home Home, current page.
  • About

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @
  • Language: English
    • Bahasa Indonesia
    • Bahasa Melayu
    • Català
    • Čeština
    • Dansk
    • Deutsch
    • English UK
    • Español
    • Filipino
    • Français
    • Hrvatski
    • Italiano
    • Magyar
    • Nederlands
    • Norsk
    • Polski
    • Português
    • Română
    • Slovenčina
    • Suomi
    • Svenska
    • Tiếng Việt
    • Türkçe
    • Ελληνικά
    • Български език
    • Русский
    • Српски
    • Українська мова
    • עִבְרִית
    • العربية
    • فارسی
    • मराठी
    • हिन्दी
    • বাংলা
    • ગુજરાતી
    • தமிழ்
    • ಕನ್ನಡ
    • ภาษาไทย
    • 한국어
    • 日本語
    • 简体中文
    • 繁體中文
  • Have an account? Log in
    Have an account?
    · Forgot password?

    New to Twitter?
    Sign up
wdormann's profile
Will Dormann
Will Dormann
Will Dormann
@wdormann

Tweets

Will Dormann

@wdormann

Vulnerability Analyst at the CERT/CC. My thoughts are my own, not my employer's.

Joined August 2012

Tweets

  • © 2020 Twitter
  • About
  • Help Center
  • Terms
  • Privacy policy
  • Imprint
  • Cookies
  • Ads info
Dismiss
Previous
Next

Go to a person's profile

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @

Promote this Tweet

Block

  • Tweet with a location

    You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more

    Your lists

    Create a new list


    Under 100 characters, optional

    Privacy

    Copy link to Tweet

    Embed this Tweet

    Embed this Video

    Add this Tweet to your website by copying the code below. Learn more

    Add this video to your website by copying the code below. Learn more

    Hmm, there was a problem reaching the server.

    By embedding Twitter content in your website or app, you are agreeing to the Twitter Developer Agreement and Developer Policy.

    Preview

    Why you're seeing this ad

    Log in to Twitter

    · Forgot password?
    Don't have an account? Sign up »

    Sign up for Twitter

    Not on Twitter? Sign up, tune into the things you care about, and get updates as they happen.

    Sign up
    Have an account? Log in »

    Two-way (sending and receiving) short codes:

    Country Code For customers of
    United States 40404 (any)
    Canada 21212 (any)
    United Kingdom 86444 Vodafone, Orange, 3, O2
    Brazil 40404 Nextel, TIM
    Haiti 40404 Digicel, Voila
    Ireland 51210 Vodafone, O2
    India 53000 Bharti Airtel, Videocon, Reliance
    Indonesia 89887 AXIS, 3, Telkomsel, Indosat, XL Axiata
    Italy 4880804 Wind
    3424486444 Vodafone
    » See SMS short codes for other countries

    Confirmation

     

    Welcome home!

    This timeline is where you’ll spend most of your time, getting instant updates about what matters to you.

    Tweets not working for you?

    Hover over the profile pic and click the Following button to unfollow any account.

    Say a lot with a little

    When you see a Tweet you love, tap the heart — it lets the person who wrote it know you shared the love.

    Spread the word

    The fastest way to share someone else’s Tweet with your followers is with a Retweet. Tap the icon to send it instantly.

    Join the conversation

    Add your thoughts about any Tweet with a Reply. Find a topic you’re passionate about, and jump right in.

    Learn the latest

    Get instant insight into what people are talking about now.

    Get more of what you love

    Follow more accounts to get instant updates about topics you care about.

    Find what's happening

    See the latest conversations about any topic instantly.

    Never miss a Moment

    Catch up instantly on the best stories happening as they unfold.

    1. Will Dormann‏ @wdormann Feb 9
      • Report Tweet
      • Report NetzDG Violation
      Replying to @dwizzzleMSFT @GregCGilbert @SwiftOnSecurity

      Although now that I look at what I just typed, saying that my home PC "is too old" already factors in the potentially-incorrect assumption that a CPU earlier than a 7th Generation Intel Core won't efficiently use HVCI. It's perhaps an excellent test case for testing the impact.

      1 reply 0 retweets 0 likes
    2. Will Dormann‏ @wdormann Feb 9
      • Report Tweet
      • Report NetzDG Violation
      Replying to @wdormann @dwizzzleMSFT and

      Or maybe not... Sigh.pic.twitter.com/Rf4eiZ41JV

      1 reply 0 retweets 0 likes
    3. Dave dwizzzle Weston‏ @dwizzzleMSFT Feb 9
      • Report Tweet
      • Report NetzDG Violation
      Replying to @wdormann @GregCGilbert @SwiftOnSecurity

      You have a driver that either allocates rwx pages or hasn't merged IAT and thus has executable code in data section

      1 reply 0 retweets 2 likes
    4. Will Dormann‏ @wdormann Feb 9
      • Report Tweet
      • Report NetzDG Violation
      Replying to @dwizzzleMSFT @GregCGilbert @SwiftOnSecurity

      I suppose the obvious question at this point is: How do I determine the faulting driver? Is it logged in the Event Viewer somewhere? Perhaps for increased adoption, the error dialog could name names (if possible).

      1 reply 0 retweets 1 like
    5. Dave dwizzzle Weston‏ @dwizzzleMSFT Feb 9
      • Report Tweet
      • Report NetzDG Violation
      Replying to @wdormann @GregCGilbert @SwiftOnSecurity

      Yeah it's logged in the device guard informational log, all of this is the wonderful deployment guide

      1 reply 0 retweets 3 likes
    6. Dave dwizzzle Weston‏ @dwizzzleMSFT Feb 9
      • Report Tweet
      • Report NetzDG Violation
      Replying to @dwizzzleMSFT @wdormann and

      https://techcommunity.microsoft.com/t5/windows-hardware-certification/driver-compatibility-with-device-guard-in-windows-10/ba-p/364865 …

      1 reply 1 retweet 4 likes
    7. Will Dormann‏ @wdormann Feb 10
      • Report Tweet
      • Report NetzDG Violation
      Replying to @dwizzzleMSFT @GregCGilbert @SwiftOnSecurity

      Given this sample output, what's the HVCI prognosis? Secure Boot is the blocker (it's an upgraded Win7 PC) at the moment. What's not clear is the impact of the other yellow items on HVCI. If I do get HVCI working, it's possibly at a 40% performance hit? http://borec.ch/the-potential-performance-impact-of-device-guard-hvci/ …pic.twitter.com/0HiuF3MAG6

      1 reply 0 retweets 1 like
    8. Dave dwizzzle Weston‏ @dwizzzleMSFT Feb 10
      • Report Tweet
      • Report NetzDG Violation
      Replying to @wdormann @GregCGilbert @SwiftOnSecurity

      Do you mean you aren’t UEFI boot? If so then yeah you can’t do it. The author doesn’t share benchmarks, hardware config, or OS so I can’t validate his findings.

      1 reply 0 retweets 1 like
    9. Will Dormann‏ @wdormann Feb 10
      • Report Tweet
      • Report NetzDG Violation
      Replying to @dwizzzleMSFT @GregCGilbert @SwiftOnSecurity

      Indeed. It's a older MBR-based system so there's no UEFI booting going on. My question is whether correcting that would be a fool's errand or not, based on the other yellow items in my screenshot.

      2 replies 0 retweets 0 likes
    10. Dave dwizzzle Weston‏ @dwizzzleMSFT Feb 10
      • Report Tweet
      • Report NetzDG Violation
      Replying to @wdormann @GregCGilbert @SwiftOnSecurity

      Intel has compliant drivers which are what seem to be failing, I just can’t with certainty whether they apply to your hardware. Several other drivers I don’t recognize. @DerekGranito ?

      1 reply 0 retweets 0 likes
      Will Dormann‏ @wdormann Feb 10
      • Report Tweet
      • Report NetzDG Violation
      Replying to @dwizzzleMSFT @GregCGilbert and

      I suppose the relevant info here is that any incompatible drivers listed in yellow would prevent enabling HVCI? Is that true? What about the other yellow items below? E.g. the lack of: HSTI TPM Secure MOR NX Protector SMM Mitigation

      7:43 AM - 10 Feb 2020
      2 replies 0 retweets 0 likes
        1. New conversation
        2. Derek Granito‏ @DerekGranito Feb 10
          • Report Tweet
          • Report NetzDG Violation
          Replying to @wdormann @dwizzzleMSFT and

          None of those technically prevent enabling HVCI... It is capable on any device that supports hardware virtualization. That said, it's harder to make security promises about HVCI if you're lacking TPM, Secure boot, etc

          1 reply 0 retweets 1 like
        3. Derek Granito‏ @DerekGranito Feb 10
          • Report Tweet
          • Report NetzDG Violation
          Replying to @DerekGranito @wdormann and

          If HVCI is enabled, some of those drivers would fail to load. Though "executable pool" is actually just a warning that the driver has a risk of not functioning correctly, but generally benign. That old intel graphics driver is our classic case of that risk becoming a reality

          0 replies 0 retweets 1 like
        4. End of conversation
        1. New conversation
        2. Greg C. Gilbert‏ @GregCGilbert Feb 10
          • Report Tweet
          • Report NetzDG Violation
          Replying to @wdormann @dwizzzleMSFT and

          If it's not 7th Gen, then I wouldn't bother.  We had everything else compliant except that, and Excel was literally unusable.

          1 reply 0 retweets 0 likes
        3. Derek Granito‏ @DerekGranito Feb 10
          • Report Tweet
          • Report NetzDG Violation
          Replying to @GregCGilbert @wdormann and

          Excel performance with HVCI does significantly benefit from MBEC on modern CPUs... I've definitely been able to use it regardless, though I wasn't doing anything too involved

          0 replies 0 retweets 1 like
        4. End of conversation

      Loading seems to be taking a while.

      Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.

        Promoted Tweet

        false

        • © 2020 Twitter
        • About
        • Help Center
        • Terms
        • Privacy policy
        • Imprint
        • Cookies
        • Ads info