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
__agwa's profile
Andrew Ayer
Andrew Ayer
Andrew Ayer
@__agwa

Tweets

Andrew Ayer

@__agwa

Bootstrapped founder of @SSLMate, where I make SSL certificates easier and do #webpki and #CertificateTransparency stuff.

Cambridge, MA + SF Bay Area
agwa.name
Joined November 2011

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.

    Andrew Ayer‏ @__agwa 1 Nov 2018
    • Report Tweet
    • Report NetzDG Violation

    Andrew Ayer Retweeted SSLMate

    I'm super excited about the launch of Cert Spotter API 1.0 today! #CertificateTransparency (1/n)https://twitter.com/SSLMate/status/1058084089880870914 …

    Andrew Ayer added,

    SSLMate @SSLMate
    Introducing Cert Spotter API 1.0 - the easiest way to programmatically list a domain's certificates, powered by #CertificateTransparency: https://sslmate.com/blog/post/certspotter_apiv1 …
    3:20 PM - 1 Nov 2018
    • 14 Retweets
    • 24 Likes
    • Maketracks.social Gabriele Zanoni Matthieu OLIVIER Clint Wilson Al Cutter Cristian H. Ares Mark Janssen Cameron Dixon Website Watchdog
    2 replies 14 retweets 24 likes
      1. New conversation
      2. Andrew Ayer‏ @__agwa 1 Nov 2018
        • Report Tweet
        • Report NetzDG Violation

        The main question people want #CertificateTransparency to answer is: what certificates exist for a domain? You can use this information to detect misissued certs, expiring certs, and certs that a former sysadmin manually provisioned and didn't tell anyone about. (2/n)

        1 reply 0 retweets 1 like
        Show this thread
      3. Andrew Ayer‏ @__agwa 1 Nov 2018
        • Report Tweet
        • Report NetzDG Violation

        But how do you do this? There are dozens of #CertificateTransparency logs you have to look in, and the list of logs changes all the time. And the logs are just big haystacks of Merkle Tree Leaves, rather than certificates indexed by domain name. (3/n)

        1 reply 0 retweets 1 like
        Show this thread
      4. Andrew Ayer‏ @__agwa 1 Nov 2018
        • Report Tweet
        • Report NetzDG Violation

        This is where Cert Spotter comes in: you can make an HTTP request to the Cert Spotter API with a domain name and it returns a JSON array with certificates for that domain, pulled from CT logs. Super easy! (4/n)

        1 reply 0 retweets 0 likes
        Show this thread
      5. Andrew Ayer‏ @__agwa 1 Nov 2018
        • Report Tweet
        • Report NetzDG Violation

        Of course, the response isn't static. It gets bigger as new certificates are issued and added to CT. So you can remember your position in the results and poll for new certificates added since your last query. No need to re-download the whole list to find new certificates! (5/n)

        1 reply 0 retweets 1 like
        Show this thread
      6. Andrew Ayer‏ @__agwa 1 Nov 2018
        • Report Tweet
        • Report NetzDG Violation

        In CT, a particular issuance can show up as both a certificate and a "precertificate" which contain basically identical information. With the Cert Spotter API, you'll only get one entry rather than two. (6/n)

        1 reply 0 retweets 0 likes
        Show this thread
      7. Andrew Ayer‏ @__agwa 1 Nov 2018
        • Report Tweet
        • Report NetzDG Violation

        Have a monitoring system that could benefit from easy access to the 100s of millions of certificates in #CertificateTransparency? Just want to play around and see what's there? Head over to https://sslmate.com/certspotter/api  (7/7)

        0 replies 0 retweets 1 like
        Show this thread
      8. 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