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Aaron Parecki

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    Chase sends 8-digit 2fa SMS codes, which seems excessive compared to the 6 that most other places use, but even weirder is that the first digit of them has always been the same, effectively making it a 7 digit code. Anyone know what's up with that?
    Portland, Oregon, USA • 41°F
    Sat, Feb 15, 2025 5:56pm -08:00 #security #sms #2fa
    4 likes 7 replies
    • jack the nonabrasive
    • Royce Williams
    • carpetbomberz
    • Jonathan Yu
    • micro.blog/shew

      @aaronpk pretty much like those sent by Google that start with "G-" I guess

      Sun, Feb 16, 2025 3:16pm +00:00
    • Jak2k mastodontech.de/users/jak2k

      @aaronpk Are they counting up?

      Sun, Feb 16, 2025 5:19am -08:00
    • Anthony Sorace pdx.social/users/a

      @aaronpk Maybe adding to the mystery: my login codes always start with a 4 (yeah, I’m okay making that effectively 7 digits now, whatever), but when they gave me one for signing up with Zelle it was 8 digits with a leading 2. Totally speculative, but I wonder if they assign a leading digit per subsystem.

      Sat, Feb 15, 2025 9:33pm -08:00
    • Michael Slade mastodon.cloud/users/michaelslade

      @aaronpk They’re lonely and want to see if anyone notices.

      Sat, Feb 15, 2025 9:23pm -08:00
    • Brandon Kraft ❤️‍🔥🧡 religious.social/users/kraft

      @aaronpk what gets me is they ask for user name and password, then 2fa with the password again.

      Sat, Feb 15, 2025 8:44pm -08:00
    • carpetbomberz mastodon.online/users/carpetbomberz

      @aaronpk Never realized the fist digit is the same. I've always suffered under the 8digit code when it first came into being. Could never remember it long enough to type it in. I kinda wish they had a Passkey as an option.

      Sat, Feb 15, 2025 6:06pm -08:00
    • Jonathan Yu mastodon.social/users/jawnsy

      @aaronpk Email codes always seem to start with 4, maybe it's something to do with the medium they sent it over?

      Sat, Feb 15, 2025 5:59pm -08:00
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Hi, I'm Aaron Parecki, Director of Identity Standards at Okta, and co-founder of IndieWebCamp. I maintain oauth.net, write and consult about OAuth, and participate in the OAuth Working Group at the IETF. I also help people learn about video production and livestreaming. (detailed bio)

I've been tracking my location since 2008 and I wrote 100 songs in 100 days. I've spoken at conferences around the world about owning your data, OAuth, quantified self, and explained why R is a vowel. Read more.

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