OpenID Foundation Workshop Recap
On April 7, 2025, OpenID Foundation Workshop was given at Google campus in California. Recordings and slides will be coming out in the near future,…
Open Data in Finance Conference: Chair’s Welcome
Here is the script of the Chair’s remark at the opening of the Open Data in Fianance Conference in London (June 15, 2016) 09:00 –…
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GSA 18F’s unauthorized Slack use caused breach of 100 GSA Google Drives?
@JamieXML pinged me about the @18F breach that I completely missed. I quickly googled it and found this article. IG report:18F’s unauthorized Slack use caused…
View More GSA 18F’s unauthorized Slack use caused breach of 100 GSA Google Drives?Authorization Delegation: A financial accounts aggregation use case
I have many bank accounts. If I wanted to use a new and shiny graphing service, I have to get authorization from each banks individually.…
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Cut and pasted code attack in OAuth 2.0 [RFC6749]
The so called ‘cut and pasted code attack’ also known as ‘Frankenstein Monster Attack’ is an attack that the adversary swaps the ‘code’ in the…
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Code phishing attack on OAuth 2.0 [RFC6749]
Code phishing attack is the attack that the adversary obtains the code and client credentials from the legitimate client and uses them against the honest token…
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IdP Mix-up Attack on OAuth [RFC6749]
On Sunday 10, 2016, OAuth Security Advisory: Authorization Server Mix-Up was issued. Nov Matake wrote an excellent article about it in Japanese. To help understand the…
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Happy New Year!
2015 was a hectic year: Bunch of the specs that I have been working on (JWS [RFC7515], JWT [RFC7519], OAuth PKCE [RFC7636], JWK Thumbprint [RFC7638]）got published and the work to convert…
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On the XARA vulnerability on MacOS X and iOS
Just came across this article: Apple CORED: Boffins reveal password-killer 0-days for iOS and OS X, by The Register. Since the news itself did not explain…
View More On the XARA vulnerability on MacOS X and iOSApple’s answer to the in-secure use of in-app browser? — iOS 9 introduces SFSafariViewController
Apple forcing developpers to use in-app browser instead of spawning Safari has been known as an extremely insecure practice for sometime. There many reasons that…
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JWS, JWT, and others now RFC!
It has taken soooo long [1], but JSON Web Signature (JWS), JSON Web Token (JWT) , together with other JW* suite finally are Standard Track…
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