List of mistakes on Security aspects which developers usually make

Below are some common mistakes developers make while development. Most of the mistakes will not impact the functionality of the application so tendency is to make the mistake subconsciously. Security should be by design and it is not something we should incorporate after the development.

OWASP guidelines should be taken as high priority in addition to this list.

  1. Writing sensitive information such as passwords in the paper or sticky notes
  2. Sharing credentials between team members
  3. Hard-coding sensitive information as plain text, including passwords in the application in configuration files, databases and comments
  4. Not encrypting the database
  5. Use of untrusted code from public internet forums without proper reviews and corrections
  6. Not encrypting the communication channels such as API
  7. Not following the principle of least privileges
  8. Opening server ports to public
  9. Not enforcing password policies (strong password, expiry policy, multi-factor-authentication)
  10. Not educating oneself on the secure coding practices
  11. Writing SQL in application code, instead of using stored procedures or ORM libraries
  12. Not validating user input values at server side
  13. Not setting session expiry policy
  14. Giving password hints on unsuccessful login attempts
  15. Not using custom exception pages, instead expose the debug messages to user
  16. No logging and monitoring
  17. Not making use of cryptography libraries
  18. Not writing unit testing code
  19. Not Automating static code analysis tools such as SonarQube
  20. Using untrusted sources for downloading libraries

Create a .NET console application using command line

We don’t deal with .NET framework, or .NET Core anymore. We call it ‘.NET’. As of writing this blog, the latest version available is .NET 5. And, these steps works in previous versions of .NET Core also.

Assuming you have downloaded the latest version of .NET.

Step 1:Open command prompt

Step 2: Type: dotnet new console -name “HelloWorld

You must see a new folder named “HelloWorld” crated with a directory structure like this:

You can open Program.cs to see its contents. It has a very basic program to display “Hello World!” message.

Step 3: Your .NET console application is ready. First, you have to build it

Type command: dotnet build “HelloWorld”

You can see HelloWorld.exe file is created, in addition to some other files in your folder \HelloWorld\bin\Debug\net5.0

Step 4: Run!

You can simply run the exe file directly going to the location, or by typing this command:

Type command:

Step 5: Alternate way to run the program

Go inside your program folder, i.e., “HelloWorld“, then type command:

dotnet run HelloWorld

or simply, dotnet run

JavaScript Notification API for beginners

Just two steps:

  1. Ask user the permission to send notifications


2. Create/send notifiation

notificaiton = new Notification (‘This is a notification’);     

Dapr: The distributed application runtime is now production ready

Dapr - Distributed Application Runtime

Simplify cloud-native application development. Focus on your application’s core logic and keep your code simple and portable

Dapr is an open source, portable, event-driven runtime that makes it easy for developers to build resilient, microservice, stateless and stateful applications that run on the cloud and edge. Dapr enables developers to focus on writing business logic and not solving distributed system challenges, thereby significantly improving their productivity, and reducing development time.

Read more:
Dapr Home:

Why .NET 5.0 and not .NET Core 5.0? And, where is .NET (core) 4.0?

Note the point…

.NET 5.0 is the next major release of .NET Core following 3.1. We named this new release .NET 5.0 instead of .NET Core 4.0 for two reasons:

  • We skipped version numbers 4.x to avoid confusion with .NET Framework 4.x.
  • We dropped “Core” from the name to emphasize that this is the main implementation of .NET going forward. .NET 5.0 supports more types of apps and more platforms than .NET Core or .NET Framework.

ASP.NET Core 5.0 is based on .NET 5.0 but retains the name “Core” to avoid confusing it with ASP.NET MVC 5. Likewise, Entity Framework Core 5.0 retains the name “Core” to avoid confusing it with Entity Framework 5 and 6.