📌 Cross-Origin Resource Sharing (CORS) Summary
Cross-Origin Resource Sharing (CORS) is a security feature used by web browsers to control how resources on one website can be requested from another domain. It helps prevent malicious websites from accessing sensitive information on a different site without permission. CORS works by using special HTTP headers set by the server to specify which external sites are allowed to access its resources.
🙋🏻♂️ Explain Cross-Origin Resource Sharing (CORS) Simply
Imagine a school where each classroom can only let in students from its own class unless a teacher gives special permission. CORS is like the teacher giving a note that says which other students can visit the classroom safely. This way, only trusted visitors can enter, keeping everyone safe.
📅 How Can it be used?
CORS allows a web app hosted on one domain to safely request data from an API on another domain.
🗺️ Real World Examples
A web developer creates a weather dashboard hosted at example-weather.com that fetches data from an external weather API at api.weatherdata.com. To allow this, the weather API server sets CORS headers so the dashboard can access the weather information securely.
An online store at shop.example.com uses a payment gateway at payments.examplepay.com to process transactions. The payment service enables CORS so the shop’s website can communicate with the payment system directly in the user’s browser.
✅ FAQ
Why do websites sometimes block content from other sites?
Websites use CORS to decide who can access their content from another site. This helps protect users by stopping shady websites from grabbing sensitive information without permission. So, if you see content being blocked, it is usually a website being careful about security.
How does CORS help keep my personal information safe?
CORS acts like a bouncer for your browser, only letting trusted websites interact with each other. This means your personal details, like login information or private data, are less likely to end up in the wrong hands when you move between different websites.
Can CORS cause problems for web developers?
Yes, CORS can sometimes make things tricky for developers. If a website does not set its permissions correctly, it might accidentally block helpful apps or tools from accessing its content. Developers need to carefully set up CORS rules to keep things secure without making it hard for users or other sites to connect.
📚 Categories
🔗 External Reference Links
Cross-Origin Resource Sharing (CORS) link
Ready to Transform, and Optimise?
At EfficiencyAI, we don’t just understand technology — we understand how it impacts real business operations. Our consultants have delivered global transformation programmes, run strategic workshops, and helped organisations improve processes, automate workflows, and drive measurable results.
Whether you're exploring AI, automation, or data strategy, we bring the experience to guide you from challenge to solution.
Let’s talk about what’s next for your organisation.
💡Other Useful Knowledge Cards
Secure Output
Secure output refers to the practice of ensuring that any data sent from a system to users or other systems does not expose sensitive information or create security risks. This includes properly handling data before displaying it on websites, printing it, or sending it to other applications. Secure output is crucial for preventing issues like data leaks, unauthorised access, and attacks that exploit how information is shown or transmitted.
Emerging and Cross-Disciplinary Topics (30 Topics)
Emerging and cross-disciplinary topics are subjects and fields that combine ideas, methods, and tools from different traditional disciplines to address new or complex challenges. These topics often arise as science and technology advance, leading to unexpected overlaps between areas like biology, computing, engineering, social sciences, and the arts. The goal is to create innovative solutions or gain new insights by blending approaches that would not usually interact.
Anonymous Credential Systems
Anonymous credential systems are digital tools that let users prove they have certain rights or attributes, such as being over 18 or being a student, without revealing their full identity. These systems use cryptographic techniques to let users show only the necessary information, protecting their privacy. They are often used to help keep personal data safe while still allowing access to services that require verification.
Digital Strategy Playbooks
A digital strategy playbook is a structured guide that outlines how an organisation can use digital tools and channels to achieve its business goals. It includes recommended actions, timelines, and best practices for areas like social media, websites, mobile apps, and digital marketing. Playbooks help teams stay consistent and organised as they implement digital initiatives.
Workforce Scheduling Tools
Workforce scheduling tools are software applications that help organisations plan and manage employee work shifts, assignments, and availability. These tools automate the process of creating schedules, taking into account factors like staff preferences, legal requirements, and business needs. By using workforce scheduling tools, companies can reduce manual errors, improve staff satisfaction, and ensure they have the right number of people working at the right times.