Secure your cookies!

As we are building more and more web applications in the Cloud, security becomes a key aspect of every application. Before we felt a little bit more safe behind the company firewall but these days are gone…

And as your security is as strong as your weakest link, it is important to understand every aspect of it. One possible risk is the (wrong) usage of cookies. Most of the time when you create a cookie inside your ASP.NET application, you don’t want to read it on the client. With a tool like https://www.cookiecadger.com/, it becomes very easy to steal someone's authentication cookie. How can we prevent this? In ASP.NET, you have to set the HttpOnly flag to true when creating a cookie:

Unfortunately the default for HttpOnly=false, so if you forget to set it somewhere you’re in trouble. Probably better is to set HTTP only as the default for all cookies to via the web.config:

More info: http://www.troyhunt.com/2013/03/c-is-for-cookie-h-is-for-hacker.html

Azure DevOps/ GitHub emoji

I’m really bad at remembering emoji’s. So here is cheat sheet with all emoji’s that can be used in tools that support the github emoji markdown markup: All credits go to rcaviers who created this list.

Kubernetes–Limit your environmental impact

Reducing the carbon footprint and CO2 emission of our (cloud) workloads, is a responsibility of all of us. If you are running a Kubernetes cluster, have a look at Kube-Green . kube-green is a simple Kubernetes operator that automatically shuts down (some of) your pods when you don't need them. A single pod produces about 11 Kg CO2eq per year( here the calculation). Reason enough to give it a try! Installing kube-green in your cluster The easiest way to install the operator in your cluster is through kubectl. We first need to install a cert-manager: kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/v1.14.5/cert-manager.yaml Remark: Wait a minute before you continue as it can take some time before the cert-manager is up & running inside your cluster. Now we can install the kube-green operator: kubectl apply -f https://github.com/kube-green/kube-green/releases/latest/download/kube-green.yaml Now in the namespace where we want t

DevToys–A swiss army knife for developers

As a developer there are a lot of small tasks you need to do as part of your coding, debugging and testing activities. DevToys is an offline windows app that tries to help you with these tasks. Instead of using different websites you get a fully offline experience offering help for a large list of tasks. Many tools are available. Here is the current list: Converters JSON <> YAML Timestamp Number Base Cron Parser Encoders / Decoders HTML URL Base64 Text & Image GZip JWT Decoder Formatters JSON SQL XML Generators Hash (MD5, SHA1, SHA256, SHA512) UUID 1 and 4 Lorem Ipsum Checksum Text Escape / Unescape Inspector & Case Converter Regex Tester Text Comparer XML Validator Markdown Preview Graphic Color B

The art of simplicity

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