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.
  • Home Home Home, current page.
  • Moments Moments Moments, current page.

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
dguido's profile
Dan Guido
Dan Guido
Dan Guido
@dguido

Tweets

Dan Guido

@dguido

CEO @trailofbits, organizer @EmpireHacking, director @hack_secure. Open DMs.

Brooklyn, NY
trailofbits.com
Joined April 2008

Tweets

  • © 2018 Twitter
  • About
  • Help Center
  • Terms
  • Privacy policy
  • 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. Stefano Zanero‏Verified account @raistolo 14 Sep 2017

      Security pals: what is the most concise secure coding advice you can give to a C devel for embedded? Pls RT and read thread before answering

      70 replies 64 retweets 95 likes
      Show this thread
      Dan Guido‏ @dguido 14 Sep 2017
      Replying to @raistolo @matthew_d_green

      Get the code building on a modern compiler, then turn on all errors, warnings, and instrumentation to find bugs.

      6:02 AM - 14 Sep 2017
      • 5 Retweets
      • 27 Likes
      • JoYo 卓越网 Sam Brown Ivan Leichtling Michael Macnair Lynn Grant Dana McKiernan Jens Jakob Andersen Marc Schneider Stefano Zanero
      3 replies 5 retweets 27 likes
        1. New conversation
        2. Marc Schneider‏ @MMarc703 14 Sep 2017
          Replying to @dguido @raistolo @matthew_d_green

          Also look at the assembly output, especially on sensitive code. Optimization can break a correctly implemented crypto package.

          1 reply 0 retweets 5 likes
        3. Stefano Zanero‏Verified account @raistolo 14 Sep 2017
          Replying to @MMarc703 @dguido @matthew_d_green

          that's hard, though, for your average embedded devel, isn't it? Can we help?

          2 replies 0 retweets 0 likes
        4. Dan Guido‏ @dguido 14 Sep 2017
          Replying to @raistolo @MMarc703 @matthew_d_green

          Upgrading to a modern compiler is a straightforward task with a clearly measurable goal. You can hire help for it (trail of bits will do it)

          1 reply 0 retweets 2 likes
        5. Stefano Zanero‏Verified account @raistolo 14 Sep 2017
          Replying to @dguido @MMarc703 @matthew_d_green

          I agree with you. But most of these devels and companies do not have the budget. What are smaller, simple things we can advise them to do?

          4 replies 0 retweets 0 likes
        6. Dan Guido‏ @dguido 14 Sep 2017
          Replying to @raistolo @MMarc703 @matthew_d_green

          I'm not sure the magic answer you're looking to find. Using modern compiler tools is something a junior dev can work towards.

          1 reply 0 retweets 4 likes
        7. Don A. Bailey‏ @DonAndrewBailey 14 Sep 2017
          Replying to @dguido @raistolo and

          Dan's advice is useful; another great help is following NASA's embedded coding guidelines. C Eng isn't about security as much as reliability

          1 reply 0 retweets 6 likes
        8. Chris Eng‏Verified account @chriseng 14 Sep 2017
          Replying to @DonAndrewBailey @dguido and

          I was skimming this thread and thought you were talking about me for a second.

          0 replies 0 retweets 2 likes
        9. End of conversation
        1. Chris Rohlf‏ @chrisrohlf 14 Sep 2017
          Replying to @dguido @raistolo @matthew_d_green

          Agree with Dan. Once you port to clang use clang-analyze and refactor. Then tooling like ASAN becomes possible.

          0 replies 3 retweets 9 likes
          Thanks. Twitter will use this to make your timeline better. Undo
          Undo
        1. New conversation
        2. Robᵉʳᵗ Graham X🅂 Max‏ @ErrataRob 14 Sep 2017
          Replying to @dguido @raistolo @matthew_d_green

          Or turn them on before getting the code building. Turning them all on should be the default.

          1 reply 0 retweets 0 likes
        3. Matt Jones‏ @volvent 14 Sep 2017
          Replying to @ErrataRob @dguido and

          Setup important dev<>test<>prod code/config early (TLS, etc.) to avoid weakening defaults inline for convenience, that may end up shipped.

          0 replies 0 retweets 0 likes
        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

        • © 2018 Twitter
        • About
        • Help Center
        • Terms
        • Privacy policy
        • Cookies
        • Ads info