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

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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

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    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
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    1. Tyler Tringas‏ @tylertringas Apr 14
      • Report Tweet
      • Report NetzDG Violation

      Just me or is 2FA still basically unsolved? SMS is too easily hackable but Auth apps are tied to your physical lose-able phone. Best solution we've got is printing out recovery codes on dead tree paper and saving them in the bank vault that we all obviously have?

      10 replies 0 retweets 25 likes
    2. Patrick McKenzie‏ @patio11 Apr 14
      • Report Tweet
      • Report NetzDG Violation
      Replying to @tylertringas

      FIDO keys are really good where they're supported. One on your person (or in your workspace), one in your safe deposit box. I like them fractionally more than phone authenticator apps because easier to recover from loss and effectively interception-proof.

      5 replies 0 retweets 8 likes
    3. Patrick McKenzie‏ @patio11 Apr 14
      • Report Tweet
      • Report NetzDG Violation
      Replying to @patio11 @tylertringas

      Reasonably high confidence but not 100% on this: You can be phished for a one-use code from an authenticator app but you effectively can't be phished for a FIDO operation, contingent on the service you're using being competent.

      1 reply 0 retweets 6 likes
    4. STAY HOME | SOCIAL DISTANCE‏ @AdsAmateur Apr 14
      • Report Tweet
      • Report NetzDG Violation
      Replying to @patio11 @tylertringas

      because a FIDO key is also paired to the websites TLS certificate?

      1 reply 0 retweets 0 likes
      Andrew Ayer‏ @__agwa Apr 14
      • Report Tweet
      • Report NetzDG Violation
      Replying to @AdsAmateur @patio11 @tylertringas

      The key generates a digital signature that includes the domain name of the current page. The phishing site can forward the signature to the real site, but it won't validate because it will contain the phishing domain, not the real domain.

      10:16 AM - 14 Apr 2020
      • 2 Likes
      • Joachim Schipper STAY HOME | SOCIAL DISTANCE
      0 replies 0 retweets 2 likes

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