How do you ensure the security of JavaScript applications?

Security is a broad aspect and should be considered on more levels than just the language you are using. However, since JavaScript is most often used for web-based applications, it requires some special attention.

Here are some aspects that will help you increase the security of your JavaScript applications:

  • Ensure that input from the application’s users is always validated and sanitised.
  • Implement strong authentication and authorisation mechanisms and rely on common practices such as OAuth2.
  • For network communication, HTTPS is recommended. Some JavaScript APIs won’t even work if the website isn’t loaded over HTTPS!
  • Regularly update your dependencies. Tools like npm audit can help you detect outdated dependencies and possible vulnerabilities.

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This also involves focussing on soft skills: our people are more than just developers, they are active partners that work with you to develop the best possible solution for your business and identify additional opportunities.

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