📌 Certificate Pinning Summary

Certificate pinning is a security technique used to ensure that a website or app only communicates with trusted servers. It works by storing a copy of the server’s digital certificate or public key within the app or client. When the app connects to a server, it checks that the server’s certificate matches the stored one. If it does not match, the connection is blocked, preventing attackers from using fake certificates to intercept or alter communications.

🙋🏻‍♂️ Explain Certificate Pinning Simply

Imagine you are sending secret messages to a friend and you both agree on a special handshake to recognise each other. If someone else tries to pretend to be your friend but does not know the handshake, you will know not to trust them. Certificate pinning works the same way for apps and websites, making sure they only talk to the real server and not an impostor.

📅 How Can it be used?

Add certificate pinning to a mobile banking app to prevent hackers from intercepting sensitive financial data.

🗺️ Real World Examples

A social media app implements certificate pinning to make sure that users’ private messages and personal data are only sent to the official company servers, even if a hacker tries to intercept the connection with a fake certificate.

An online payment service uses certificate pinning in its mobile app to guarantee that payment details are sent directly to the legitimate payment gateway, protecting customers from phishing attacks and data theft.

✅ FAQ

Certificate pinning is a security method that helps make sure an app or website is talking to the real server, not an imposter. By keeping a copy of the server’s certificate or key, it checks every time you connect. If something is off, it blocks the connection, which helps protect your information from attackers.

Certificate pinning adds an extra layer of safety by making sure your app only talks to the right server. Even if someone tries to trick your app with a fake certificate, pinning will spot the difference and stop any risky connections. This helps keep your data safe from being stolen or tampered with.

While certificate pinning boosts security, it can make things tricky if the server’s certificate changes or needs to be updated. If the app does not have the new certificate, it might block connections by mistake. This means developers need to plan carefully when updating certificates to avoid breaking the app’s connection.

📚 Categories

• Cybersecurity
• InfoSec
• Network Security

🔗 External Reference Links

Certificate Pinning link

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