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What are the best practices for securing API keys in a web application?

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What are the best practices for securing API keys in a web application?

Asked on Jan 09, 2026

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Securing API keys in a web application involves keeping them confidential and restricting their usage to minimize exposure and misuse. Here’s how you can achieve this:

Example Concept: API keys should be stored in environment variables or configuration files outside the source code. This prevents accidental exposure through version control systems. Additionally, use server-side storage for API keys and never expose them in client-side code. Implementing restrictions such as IP whitelisting and usage quotas can further secure API keys.

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Always use HTTPS to encrypt API key transmissions and protect them from interception.
Regularly rotate API keys and revoke any that are no longer in use or have been compromised.
Monitor API usage to detect any unauthorized access or anomalies in usage patterns.

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Ask any question about Website Security here... and get an instant response.

What are the best practices for securing API keys in a web application?

Asked on Jan 09, 2026

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