Contents
How does certificate pinning protect against man in the middle?
Initially positioned to solve the problem of compromised CAs, certificate pinning has proven to defend against another type of man-in-the-middle (MITM) attack. Specifically, if a user can be tricked into installing a malicious self-signed certificate on a mobile device, an attacker can execute a MITM attack on them.
Is it necessary to use certificate pinning for MITM?
Certificate pinning is unnecessary because a CA compromise is unlikely. Certificate pinning has done a great job reducing the threat of a rogue CA. However, as explained earlier, a CA compromise is not the only vector for a mobile MITM attack.
How does CERT pinning keep your data secure?
Even if users are tricked into installing a compromised certificate on their mobile, pinning refuses to transmit data in such circumstances, thus keeping your data secure. Correct pinning made by Android and IOS developers decreases the risk of information leak and acts as a countermeasure against such attacks.
Which is the easiest way to pin a certificate?
The easiest way to pin is to use the server’s public key or the hash of that public key, The hashed public key is the most flexible and maintainable approach since it allows certificates to be rotated in the server, by signing the new one with the same public key.
How to steal API key with man in middle attack?
In android this is usually done by selecting the wifi network, then advanced options, and set the proxy to manual mode, fill the proxy hostname field with the wifi IP, in this case 10.0.3.35, and the proxy port with 8080, the one where mitmproxy is listening. Depending on your Android version it will look something like this:
How to protect against man in middle attacks?
Beyond user education, mobile app developers can also help protect users against mobile man-in-the-middle attacks on Android or iOS by implementing certificate pinning in their apps. Certificate pinning was originally created to protect against the threat of a rogue CA.
How does public key pinning work in certificates?
Public key pinning pins the public key of the certificate, which remains constant across multiple certificates. This allows you to use the same public key to issue new certificates without having to rewrite any code for different environments.