Hi all,
How does it compare to the security features of Motorola, Pixel, iPhone, and Xiaomi?
When it comes to raw security, Knox can still be bypassed fairly quickly. Zero-day exploits for Samsung phones are relatively inexpensive since Android is the main vulnerability, but Samsung devices are a bit more secure than other Android phones. Unfortunately, only iPhones are truly hard to crack.
The Secure Folder is excellent for adding an extra layer of security and allows you to separate certain apps, essentially creating a phone within a phone.
The benefits really depend on how security-conscious you are. For the average user, it provides a trusted name protecting your data, payments, and security keys (like passwords, screen locks, and biometrics).
Samsung Knox uses on-device security hardware, called ARM TrustZone, built into Qualcomm and Samsung (Exynos) chips. It encrypts sensitive data, like passwords and fingerprints, with random strings of letters, numbers, and symbols. Knox ensures these keys stay secure and untampered with from the moment the phone is powered on.
In terms of comparison with other manufacturers, the main difference with Samsung Knox is that a device can only be tampered with once before triggering an e-fuse. This is a small chip on the SoC that, once activated, cannot be reset. Once this occurs, Samsung firmware will no longer recognize the device as genuine, causing features like Samsung Wallet, Secure Folder, and any other saved sensitive information to be permanently deleted, including the encryption keys associated with them. Even restoring the phone to factory settings won’t recover these features; the device is essentially rendered security-bricked (0x1). Other manufacturers don’t use the same methods, as Samsung specifically targets this feature for sensitive businesses and government agencies where data security is crucial.
SafetyNet has been deprecated and replaced by Play Integrity. Neither relied on Knox; they primarily depended on AVB, which can easily be restored to a green state on any Samsung device. Additionally, faking this process is relatively simple.