Anders Abel
@anders.abel.nu
Asp.Net and Web Security expert, Microsoft MVP, founder of @sustainsys.com, founder of railtic.com. Been around since 337 ppm.
@kevlin.bsky.social Parking payment in Stockholm. To be fair, it's a new system that is not yet operational.
November 15, 2025 at 2:42 PM
@kevlin.bsky.social Parking payment in Stockholm. To be fair, it's a new system that is not yet operational.
Reposted by Anders Abel
Duende Software's legendary training on Identity and Access Management was originally created by Dominick Baier and Brock Allen.
We're offering the training online/remotely as 6 half-day blocks the first two weeks of November.
Read more and sign up at sustainsys.com/training
We're offering the training online/remotely as 6 half-day blocks the first two weeks of November.
Read more and sign up at sustainsys.com/training
Training Information
sustainsys.com
October 7, 2025 at 2:28 PM
Duende Software's legendary training on Identity and Access Management was originally created by Dominick Baier and Brock Allen.
We're offering the training online/remotely as 6 half-day blocks the first two weeks of November.
Read more and sign up at sustainsys.com/training
We're offering the training online/remotely as 6 half-day blocks the first two weeks of November.
Read more and sign up at sustainsys.com/training
Reposted by Anders Abel
The Sustainsys Stub Idp at stubidp.sustainsys.com is a great tool for testing your application with a Saml2 Identity provider without having to set one up. We know it's an appreciated tool that is used frequently. But please don't use it for load testing or for AI bots. >
Sustainsys.Saml2 Stub Idp
A stub idp for testing
stubidp.sustainsys.com
September 26, 2025 at 6:51 AM
The Sustainsys Stub Idp at stubidp.sustainsys.com is a great tool for testing your application with a Saml2 Identity provider without having to set one up. We know it's an appreciated tool that is used frequently. But please don't use it for load testing or for AI bots. >
Reposted by Anders Abel
Hey #dotnet friends! 🚀
Swetugg Stockholm 2026 just opened its CFP! Got a story, a war-story, or some shiny code magic to share? The stage is waiting for you 🙌
👉 sessionize.com/swetugg-stoc...
#Swetugg #CFP #csharp
Swetugg Stockholm 2026 just opened its CFP! Got a story, a war-story, or some shiny code magic to share? The stage is waiting for you 🙌
👉 sessionize.com/swetugg-stoc...
#Swetugg #CFP #csharp
Swetugg Stockholm 2026: Call for Speakers
Our vision is to create a good quality .NET conference with relevant content that is also affordable. We include everything from the shiny new things ...
sessionize.com
September 24, 2025 at 6:40 PM
Hey #dotnet friends! 🚀
Swetugg Stockholm 2026 just opened its CFP! Got a story, a war-story, or some shiny code magic to share? The stage is waiting for you 🙌
👉 sessionize.com/swetugg-stoc...
#Swetugg #CFP #csharp
Swetugg Stockholm 2026 just opened its CFP! Got a story, a war-story, or some shiny code magic to share? The stage is waiting for you 🙌
👉 sessionize.com/swetugg-stoc...
#Swetugg #CFP #csharp
Know someone who would benefit from attending my OAuth 2.0 and OIDC training for free?
Nominate them!
Do you want the free seat yourself? Ask someone to nominate you!
Nominate them!
Do you want the free seat yourself? Ask someone to nominate you!
Do you know someone who's looking for a new position and would have use for getting some expert insights on Asp.Net Core Authentication & Authorization and OpenID Connect & OAuth 2.0?
We are giving away a free seat at our workshop next week!
www.linkedin.com/posts/sustai...
We are giving away a free seat at our workshop next week!
www.linkedin.com/posts/sustai...
We are hosting the Duende Software workshop on Identity & Access Control for modern Applications and APIs using Asp.NET Core online next week, starting Tuesday August 12. | Sustainsys
We are hosting the Duende Software workshop on Identity & Access Control for modern Applications and APIs using Asp.NET Core online next week, starting Tuesday August 12.
We still have seats open, pl...
www.linkedin.com
August 10, 2025 at 11:06 AM
Know someone who would benefit from attending my OAuth 2.0 and OIDC training for free?
Nominate them!
Do you want the free seat yourself? Ask someone to nominate you!
Nominate them!
Do you want the free seat yourself? Ask someone to nominate you!
Reposted by Anders Abel
There's still a chance to nominate someone who needs it to attend my training for free! Nominate someone you think is worth a free seat to increase their chances of finding a new job.
Do you know someone who's looking for a new position and would have use for getting some expert insights on Asp.Net Core Authentication & Authorization and OpenID Connect & OAuth 2.0?
We are giving away a free seat at our workshop next week!
www.linkedin.com/posts/sustai...
We are giving away a free seat at our workshop next week!
www.linkedin.com/posts/sustai...
We are hosting the Duende Software workshop on Identity & Access Control for modern Applications and APIs using Asp.NET Core online next week, starting Tuesday August 12. | Sustainsys
We are hosting the Duende Software workshop on Identity & Access Control for modern Applications and APIs using Asp.NET Core online next week, starting Tuesday August 12.
We still have seats open, pl...
www.linkedin.com
August 8, 2025 at 4:52 PM
There's still a chance to nominate someone who needs it to attend my training for free! Nominate someone you think is worth a free seat to increase their chances of finding a new job.
There's still a chance to nominate someone who needs it to attend my training for free! Nominate someone you think is worth a free seat to increase their chances of finding a new job.
Do you know someone who's looking for a new position and would have use for getting some expert insights on Asp.Net Core Authentication & Authorization and OpenID Connect & OAuth 2.0?
We are giving away a free seat at our workshop next week!
www.linkedin.com/posts/sustai...
We are giving away a free seat at our workshop next week!
www.linkedin.com/posts/sustai...
We are hosting the Duende Software workshop on Identity & Access Control for modern Applications and APIs using Asp.NET Core online next week, starting Tuesday August 12. | Sustainsys
We are hosting the Duende Software workshop on Identity & Access Control for modern Applications and APIs using Asp.NET Core online next week, starting Tuesday August 12.
We still have seats open, pl...
www.linkedin.com
August 8, 2025 at 4:52 PM
There's still a chance to nominate someone who needs it to attend my training for free! Nominate someone you think is worth a free seat to increase their chances of finding a new job.
Reposted by Anders Abel
Do you know someone who's looking for a new position and would have use for getting some expert insights on Asp.Net Core Authentication & Authorization and OpenID Connect & OAuth 2.0?
We are giving away a free seat at our workshop next week!
www.linkedin.com/posts/sustai...
We are giving away a free seat at our workshop next week!
www.linkedin.com/posts/sustai...
We are hosting the Duende Software workshop on Identity & Access Control for modern Applications and APIs using Asp.NET Core online next week, starting Tuesday August 12. | Sustainsys
We are hosting the Duende Software workshop on Identity & Access Control for modern Applications and APIs using Asp.NET Core online next week, starting Tuesday August 12.
We still have seats open, pl...
www.linkedin.com
August 7, 2025 at 4:20 PM
Do you know someone who's looking for a new position and would have use for getting some expert insights on Asp.Net Core Authentication & Authorization and OpenID Connect & OAuth 2.0?
We are giving away a free seat at our workshop next week!
www.linkedin.com/posts/sustai...
We are giving away a free seat at our workshop next week!
www.linkedin.com/posts/sustai...
Reposted by Anders Abel
Last chance for the Early Bird offer for our training in Stockholm in September! Sign up before end of July!
We are also hosting the training online in August, in US friendly times.
We are also hosting the training online in August, in US friendly times.
Do you want to learn more about ASP.NET Authentication/Authorization and how to use OpenID Connect and OAuth 2.0?
We are offering Duende Software's legendary training on Identity and Access Management on line in August and in person in Stockholm in September.
sustainsys.com/training/
We are offering Duende Software's legendary training on Identity and Access Management on line in August and in person in Stockholm in September.
sustainsys.com/training/
Training Information
sustainsys.com
July 30, 2025 at 10:57 AM
Last chance for the Early Bird offer for our training in Stockholm in September! Sign up before end of July!
We are also hosting the training online in August, in US friendly times.
We are also hosting the training online in August, in US friendly times.
Take the chance to attend my full three day workshop on ASP.NET Core Authentication/Authorization, OpenID Connect, OAuth 2.0 and Duende IdentityServer.
I'm hosting it online in August and an in person in Stockholm in September.
Early bird pricing until the end of July!
Will you be there?
I'm hosting it online in August and an in person in Stockholm in September.
Early bird pricing until the end of July!
Will you be there?
Do you want to learn more about ASP.NET Authentication/Authorization and how to use OpenID Connect and OAuth 2.0?
We are offering Duende Software's legendary training on Identity and Access Management on line in August and in person in Stockholm in September.
sustainsys.com/training/
We are offering Duende Software's legendary training on Identity and Access Management on line in August and in person in Stockholm in September.
sustainsys.com/training/
Training Information
sustainsys.com
July 9, 2025 at 8:33 AM
Take the chance to attend my full three day workshop on ASP.NET Core Authentication/Authorization, OpenID Connect, OAuth 2.0 and Duende IdentityServer.
I'm hosting it online in August and an in person in Stockholm in September.
Early bird pricing until the end of July!
Will you be there?
I'm hosting it online in August and an in person in Stockholm in September.
Early bird pricing until the end of July!
Will you be there?
Take the chance to attend my full three day workshop on ASP.NET Core Authentication/Authorization, OpenID Connect, OAuth 2.0 and Duende IdentityServer.
I'm hosting it in August and an in person version in Stockholm in September.
Early bird pricing until end of July!
Will you be there?
I'm hosting it in August and an in person version in Stockholm in September.
Early bird pricing until end of July!
Will you be there?
Do you want to learn more about ASP.NET Authentication/Authorization and how to use OpenID Connect and OAuth 2.0?
We are offering Duende Software's legendary training on Identity and Access Management on line in August and in person in Stockholm in September.
sustainsys.com/training/
We are offering Duende Software's legendary training on Identity and Access Management on line in August and in person in Stockholm in September.
sustainsys.com/training/
Training Information
sustainsys.com
June 30, 2025 at 6:42 AM
Take the chance to attend my full three day workshop on ASP.NET Core Authentication/Authorization, OpenID Connect, OAuth 2.0 and Duende IdentityServer.
I'm hosting it in August and an in person version in Stockholm in September.
Early bird pricing until end of July!
Will you be there?
I'm hosting it in August and an in person version in Stockholm in September.
Early bird pricing until end of July!
Will you be there?
Reposted by Anders Abel
The ambition with Sustainsys was always to create a team and now it's finally time to do that!
If you are a junior .NET developer who is eager to learn and be part of some exciting development efforts, this position is for you (on site in Huddinge).
sustainsys.com/junior-net-u...
If you are a junior .NET developer who is eager to learn and be part of some exciting development efforts, this position is for you (on site in Huddinge).
sustainsys.com/junior-net-u...
Junior .NET-utvecklare
sustainsys.com
March 30, 2025 at 12:50 PM
The ambition with Sustainsys was always to create a team and now it's finally time to do that!
If you are a junior .NET developer who is eager to learn and be part of some exciting development efforts, this position is for you (on site in Huddinge).
sustainsys.com/junior-net-u...
If you are a junior .NET developer who is eager to learn and be part of some exciting development efforts, this position is for you (on site in Huddinge).
sustainsys.com/junior-net-u...
Reposted by Anders Abel
Today brings you #IdentityServer 7.2! 🎁
1️⃣ Strict Audience Validation ensures that the audience is equal to the issuer and validates the token’s typ value.
2️⃣ Discovery Document Caching helps throughput in large deployments
And more! 👉 duende.link/hjdsk82 #dotnet #aspnetcore
1️⃣ Strict Audience Validation ensures that the audience is equal to the issuer and validates the token’s typ value.
2️⃣ Discovery Document Caching helps throughput in large deployments
And more! 👉 duende.link/hjdsk82 #dotnet #aspnetcore
March 18, 2025 at 4:12 PM
Today brings you #IdentityServer 7.2! 🎁
1️⃣ Strict Audience Validation ensures that the audience is equal to the issuer and validates the token’s typ value.
2️⃣ Discovery Document Caching helps throughput in large deployments
And more! 👉 duende.link/hjdsk82 #dotnet #aspnetcore
1️⃣ Strict Audience Validation ensures that the audience is equal to the issuer and validates the token’s typ value.
2️⃣ Discovery Document Caching helps throughput in large deployments
And more! 👉 duende.link/hjdsk82 #dotnet #aspnetcore
Reposted by Anders Abel
Sustainsys.Saml2 v2.11.0 is now available on Nuget. Build targets have been modernized and there's support for modern encryption algorithms (AES-GCM and RSA-OAEP with specified MGF)
March 2, 2025 at 12:23 PM
Sustainsys.Saml2 v2.11.0 is now available on Nuget. Build targets have been modernized and there's support for modern encryption algorithms (AES-GCM and RSA-OAEP with specified MGF)
Reposted by Anders Abel
Peace for our time?
History doesn't repeat itself exactly, but there are recurring patterns.
There are certainly worrying similarities between contemporary development and events from one of the darkest periods of our history.
History doesn't repeat itself exactly, but there are recurring patterns.
There are certainly worrying similarities between contemporary development and events from one of the darkest periods of our history.
February 16, 2025 at 10:46 AM
Peace for our time?
History doesn't repeat itself exactly, but there are recurring patterns.
There are certainly worrying similarities between contemporary development and events from one of the darkest periods of our history.
History doesn't repeat itself exactly, but there are recurring patterns.
There are certainly worrying similarities between contemporary development and events from one of the darkest periods of our history.
Reposted by Anders Abel
Don't miss @anders.abel.nu & @rolandblue.bsky.social 2-day, hands-on #workshop "Identity & Access Control for modern Applications and APIs using asp.net 9" at #NDCOslo. #Earlybird offer ends, Friday, February 14!
ndcoslo.com/workshops/id...
ndcoslo.com/workshops/id...
ASP.NET Core | Open-source web framework for .NET
Build web apps and services that run on Windows, Linux, and macOS using C#, HTML, CSS, and JavaScript. Get started for free on Windows, Linux, or macOS.
ASP.NET
February 13, 2025 at 7:07 AM
Don't miss @anders.abel.nu & @rolandblue.bsky.social 2-day, hands-on #workshop "Identity & Access Control for modern Applications and APIs using asp.net 9" at #NDCOslo. #Earlybird offer ends, Friday, February 14!
ndcoslo.com/workshops/id...
ndcoslo.com/workshops/id...
Reposted by Anders Abel
We discovered a flaw in our website's contact form and some Community Edition requests were never received.
If you didn't heard back after sending your request, please reach out via duendesoftware.com/contact - we've resolved the issue.
Sorry for the inconvenience!
If you didn't heard back after sending your request, please reach out via duendesoftware.com/contact - we've resolved the issue.
Sorry for the inconvenience!
February 7, 2025 at 3:08 PM
We discovered a flaw in our website's contact form and some Community Edition requests were never received.
If you didn't heard back after sending your request, please reach out via duendesoftware.com/contact - we've resolved the issue.
Sorry for the inconvenience!
If you didn't heard back after sending your request, please reach out via duendesoftware.com/contact - we've resolved the issue.
Sorry for the inconvenience!
Looks like some new promising features are on the way for C#. I look forward to extension properties.
February 4, 2025 at 8:45 AM
Looks like some new promising features are on the way for C#. I look forward to extension properties.
Reposted by Anders Abel
If you're still on IdentityServer4, what's the reason?
February 3, 2025 at 5:21 PM
If you're still on IdentityServer4, what's the reason?
Reposted by Anders Abel
Duende IdentityServer v7.1.0 general availability release is now live. This release includes .NET 9 support, enhancements, bug fixes, performance improvements, and more.
See the release notes: github.com/DuendeSoftwa... #dotnet
See the release notes: github.com/DuendeSoftwa... #dotnet
January 15, 2025 at 12:41 PM
Duende IdentityServer v7.1.0 general availability release is now live. This release includes .NET 9 support, enhancements, bug fixes, performance improvements, and more.
See the release notes: github.com/DuendeSoftwa... #dotnet
See the release notes: github.com/DuendeSoftwa... #dotnet
Reposted by Anders Abel
Only one week until NDC Security 2025 kicks off in Oslo!
Don't miss Anders Abel and his Identity & Access Control workshop. See the full agenda and get your tickets at ndc-security.com #ndcsecurity
Don't miss Anders Abel and his Identity & Access Control workshop. See the full agenda and get your tickets at ndc-security.com #ndcsecurity
January 13, 2025 at 1:36 PM
Only one week until NDC Security 2025 kicks off in Oslo!
Don't miss Anders Abel and his Identity & Access Control workshop. See the full agenda and get your tickets at ndc-security.com #ndcsecurity
Don't miss Anders Abel and his Identity & Access Control workshop. See the full agenda and get your tickets at ndc-security.com #ndcsecurity
What if AI has been around for much longer than we think? What if it has been trying to save us all the time?
December 15, 2024 at 10:38 AM
What if AI has been around for much longer than we think? What if it has been trying to save us all the time?
Reposted by Anders Abel
If you are running Duende Identity Server in prod, and you want to ensure you have a valid license and also potentially get notified early before the license expires, the checkout bit.ly/4g7CP10
Tracking Duende Identity Server's license validity
How to implement check the validity of Duende Identity Server license and monitor the expiration date of the license in production.
bit.ly
November 28, 2024 at 3:50 AM
If you are running Duende Identity Server in prod, and you want to ensure you have a valid license and also potentially get notified early before the license expires, the checkout bit.ly/4g7CP10