Personal security in MIUI 14: The Complete Data Protection Guide to Xiaomi

Update to MIUI 14 brought not only new design and optimizations, but also drastic changes in the security of Xiaomi smartphones. users often underestimate the risks associated with the leakage of personal data, until they face fraud or hacking accounts. This firmware has implemented unique security mechanisms that go beyond standard Android features, from hardware encryption to AI monitoring of suspicious activity.

Unlike previous versions, MIUI 14 integrated protection at the core level of the system, making it resistant even to attacks through vulnerabilities in third-party applications. However, many security features are disabled by default or hidden in the depths of settings, POCO Xiaomi 13 can remain vulnerable to phishing, surveillance through the camera or data theft over Wi-Fi. MIUI 14, including those which the manufacturer does not mention in the official documentation.

What's new is safe MIUI 14 compared to MIUI 13

The main difference MIUI 14 from its predecessor, switching to hardware isolation of critical processes, and now even if an attacker gains root access, they won't be able to extract data from protected memory areas:

• 🔒 TrustZone 2.0 is a hardware security module that encrypts biometric data (fingerprints, face) and payment system keys separately from the main OS.
• 🛡️ Incognito mode for applications – creates a virtual container with a separate data store (similar to Samsung Knox, but without the need to restart)
• 🤖 AI permission analysis – the system automatically blocks suspicious application requests (e.g. access to geolocation with a flashlight)
• 🔄 Automatically update security certificates via Xiaomi servers (previously required manual updates via Settings) → The phone)

It’s important to understand that some features (like TrustZone) only work on smartphones with Snapdragon 8 Gen 2 processors and later (Xiaomi 13 Pro, Redmi). K60 On budget models (POCO X5, Redmi Note 12) is available only software protection mechanisms. You can check the support for hardware encryption through the command:

adb shell getprop ro.boot.hardware

If the answer contains lahaina or pipa, your device supports TrustZone 2.0, and the rest of the models will have to rely on software methods, which we will discuss later.

How to set up basic data protection in MIUI 14

The first thing to do after updating to MIUI 14: activate built-in security mechanisms. Many users skip this step, believing that factory settings are sufficient. In practice, more than 60 percent of Android data breaches are due to default security features disabled.

Start with the Settings path → Password and security. This is where the keys are:

1. Blocking applications - install PIN-code for instant messengers, banking applications and gallery. MIUI 14 there was an opportunity to link the unlock to NFC-tag (e.g. key fob).
2. Protection of confidentiality → Special permissions – disable access to the Call Log and SMS for all applications except system.
3. Remote management – link the device to your Mi Account so you can block or erase data when you lose it.

Pay special attention to the "Additional" section of the security menu, and there are two critical options hidden here:

• 🔐 Encrypt files – Enable full device encryption (requires at least) 80% battery charge and 15-20 Without this, the data on the internal drive can be retrieved even after resetting the settings.
• 🛡️ Malware protection: activate real-time scanning. Unlike Google Play Protect, Xiaomi also checks files in the computer. /sdcard/DCIM loading.

Enable application lock PIN-code|Activate device encryption|Disable unnecessary permissions for applications|Link Mi Accounts to Remote Management|Enable scanning for malware-->

⚠️ Note: If you use Magisk or other tools to obtain root rights, encrypt your device in the MIUI 14 It shuts down automatically, and that makes your data vulnerable to being retrieved through fastboot even after you reset, so the solution is to use OrangeFox Recovery to manually encrypt the partition. /data.

Hidden security features: what is silent Xiaomi

The manufacturer does not advertise some of the protection tools available in the MIUI 14 These features are either experimental or designed for enterprise users, but work on conventional smartphones as well.

One of these solutions is “Increased Privacy Mode” (Settings) → Special facilities → Privacy mode, when activated:

• 📵 Blocks all sensors (microphone, camera, GPS) third-party
• 🔕 Shut down the transmission. IMEI and a serial number on the network
• 🔄 Prohibits background activity for all applications except system

Another hidden option is "Protected". DNS" (Settings → Connections → Private DNS). Xiaomi is using the default DNS-ISP that can log your requests:

dns.google


or




1dot1dot1dot1.cloudflare-dns.com

For advanced users, the “SandBox” mode is available – an isolated environment for launching suspicious devices. APK. Activated through the command:

adb shell pm install --sandbox /path/to/app.apk

Protection from surveillance through camera and microphone

One of the most vulnerable parts of Xiaomi has always been the camera and microphone. MIUI 14 added tools to control access to these modules, but they require manual adjustment.

The first step is to disable access to all applications except system:

1. Go to Settings. → Annexes → Permits → Camera.
2. Check only the Camera, Google Camera (if installed) and instant messengers that really need access.
3. Repeat for the Microphone section

The second level of protection is activity indicators. MIUI 14 They Work Differently Than in Android Stock:

• 🟢 Green dot in upper right corner - camera used
• 🟠 Orange dot - microphone is active
• 🔴 Red dot – both camera and microphone are engaged at the same time

If you notice the activation of indicators without your knowledge, check the running processes through adb shell dumpsys activity activities. Common culprits are screen recording applications or battery optimizers (for example, battery optimizers, DU Battery Saver).

adb shell appops set [package_name] android:camera deny

Replace. [package_name] to the application identifier (e.g. com.whatsapp).-->

Security of payments and bank data

MIUI 14 is certified to work with Google Pay and Mi Pay, but that doesn't mean automatically protecting your financial data.Swindlers often use WebView vulnerabilities to intercept bank card data.

Minimum requirements for secure payments:

1. Install the latest version of Google Play Services (check Settings) → Annexes → Google Play Services)
2. Activate verification by SMS for Mi Account (Settings) → Xiaomi account → Security)
3. Turn off autocomplete for banking sites (Settings) → Additionally. → Language and input → Auto-fill)

Pay special attention to the Mi Pay settings:

⚠️ Note: If you use root rights, Mi Pay and Google Pay are automatically blocked due to a SafetyNet violation, and you can only bypass this through MagiskHide with a patched universal-safetynet-fix kernel. However, even in this case, banks can block your card if you find a modified firmware.

Protection against phishing and fraud in MIUI 14

MIUI 14 integrated the system "Fraud Protection", which analyzes incoming SMS But by default, it only works for Chinese numbers, to activate protection for Russian operators:

1. Go to Settings. → Password and security → Protection against fraud
2. Click Add Region and select Russia
3. Enable the options Block SMS and Call Warning

The system recognizes the following types of fraud:

• 💳 Fake bank notifications (links to phishing sites)
• 📞 Calls from the security service asking for code from the SMS
• 🎁 Lotteries and drawings asking to pay the "commission"
• 🔄 Requests to transfer money to a secure account"

For additional protection, install Xiaomi Security from GetApps, a Chinese app store that contains a database of fraudulent numbers that can be updated in real time to access it without any need to access it. VPN:

1. Download. APK APKCombo (version for your region)
2. Install through Settings → Annexes → Install unknown applications
3. In Xiaomi Security settings, activate the Global Fraudster Base

💡

Never enter codes from SMS Even if they look like the official website of the bank. MIUI 14 automatically blocks known phishing domains, but scammers register new ones daily.

How to protect against leaks via Wi-Fi and mobile networks

One of Xiaomi's weaknesses is data transmission over unsecured networks. MIUI 14 added VPN-client at system level, but it requires the right setup.

Minimum steps to protect traffic:

1. Turn off automatic connection to open Wi-Fi (Settings) → Wi-Fi → Additionally. → Auto-connection)
2. Activate protected. DNS (Instructions in the section on hidden functions)
3. Install ProtonVPN or Windscribe and set up exceptions for banking applications

For advanced users, you can configure the firewall via adb:

adb shell settings put global firewall_enabled 1


adb shell iptables -A OUTPUT -p tcp --dport 80 -j DROP




adb shell iptables -A OUTPUT -p tcp --dport 443 -j ACCEPT

These commands block all outbound traffic except protected traffic. HTTPS. To unlock a specific application, use:

adb shell iptables -A OUTPUT -m owner --uid $(adb shell dumpsys package [package_name] | grep userId= | cut -d= -f2) -j ACCEPT

⚠️ Note: If you connect to corporate Wi-Fi networks, the administrator can see your traffic even when using the service. HTTPS. In this case, it is necessary to use VPN with WireGuard encryption (e.g., Mullvad).

What to do when you steal or lose your phone MIUI 14

If your Xiaomi is stolen or you lose it, follow this algorithm.

1. Lock your device through Mi Cloud (Find your device)
2. Delete data remotely (available only if encryption is enabled)
3. Call the phone -- in MIUI 14 has a feature Loud signal, which will cause the device to beep at full volume even in silent mode.
4. Change passwords from all accounts to which your phone was linked

If the phone is turned off or in airplane mode, these actions will work on the next Internet connection.

• 🔋 Battery charge less than 5%
• 📡 The device is in the area without communication for more than 72 hours
• 🔒 The phone's decrypted.

To increase the chances of returning the phone:

• 📍 Enable precise location determination (Settings) → Location → High precision mode)
• 📸 Activate hidden shooting through the front camera when you enter the password incorrectly (configured in Settings) → Lock screen → Additionally)
• 🔊 Set up a message on the lock screen with an alternative phone number

💡

If you are often in areas with poor coverage (metro, forest), install Offline Finder from GetApps. This app saves the last known location even without the Internet and sends it to you when you first connect.