Xiaomi Application Security: What is it and how to use it

When you buy a Xiaomi smartphone, you get not only powerful iron and branded shell. MIUI, But many users don't even realize that Application Security is not just an antivirus, but a comprehensive privacy, permissions and threat management center. In this article, we will discuss what is behind this term, how it works at the system level and why its configuration is more important than it seems.

Unlike standard antivirus solutions, Xiaomi’s application security is integrated into the firmware itself and is closely linked to Mi Account services, cloud storage, and even hardware modules (like the fingerprint sensor or Titan M chip in flagships), which means it can block malware before it is installed, scan real-time traffic, and prevent data leaks through the background processes. But for these features to work effectively, they need to be properly configured — otherwise they will either interfere or be useless.

In this article, you will find not only a theoretical explanation, but also step-by-step instructions for setting up security, analyzing typical threats to Xiaomi devices, and answering the questions most often asked by users. If you have ever encountered suspicious behavior of the phone — sudden battery discharge, overheating or unauthorized access to the camera — this material will help to understand the causes and eliminate them.

What is “App Security” in Xiaomi and Why You Need It

Application Security (in English version)** MIUI — App Security is a built-in security module that combines several key components:

• 🛡️ Antivirus scanner – checks installed and downloaded files for malicious code using the signature databases of Xiaomi and partners (for example, Avast in older versions). MIUI).
• 🔍 Permission monitoring – monitors which applications request access to sensitive data (geolocation, contacts, SMS) and blocks suspicious activity.
• 🚫 Protection against phishing – warns about fraudulent sites and SMS-messages imitating banking services or government portals.
• 🔄 System Optimizer – closes the background processes that consume the battery or transmit data without the user’s knowledge.
• 🔐 Password management – stores and encrypts logins / passwords for applications and sites (similar to Google Smart Lock, but with integration into Mi Account).

The main difference from third-party antiviruses is that the security module Xiaomi operates at the level of the Android kernel, which allows it to block threats before they are activated. APK-file with malicious code, the system will interrupt the process at the stage of checking the hash amount, while the third-party antivirus will work only after installing the hash.

But there is a downside to this approach: some legitimate apps (such as modified versions of WhatsApp or Spotify) may be blacklisted because of suspicious permissions, and in such cases, users have to manually add them to exceptions — but we’ll talk about that later.

⚠️ Note: In Xiaomi devices for the European market (with firmware) MIUI EU) Security may be limited due to requirements GDPR. For example, traffic scanning is disabled by default, so to activate all options, you have to switch to the global or Chinese version of the firmware.

How to open and configure “App Security” on Xiaomi smartphone

To get into the security menu, follow the following steps:

1. Open Settings (the gear icon on the main screen).
2. Scroll down and select Security (or Passwords & Security in English).
3. Tap on the item Security of applications (in some versions) MIUI It can be called App Security or Scan).

And then you'll see the main window with a few tabs, and let's look at each one in more detail.

Enable automatic scanning of new applications|

Activate protection against phishing in the browser and SMS|

Check the list of permissions for installed applications|

Update antivirus databases (update button in upper right corner)|

Add trusted applications to exceptions (if legitimate programs are blocked)-->

Note the Exceptions (or Trusted apps) section, where you can manually add apps that the system has mistakenly blocked, for example, if you use Revanced (modified YouTube), you will have to add it to the exceptions, otherwise you will have to add it to the exceptions. MIUI It will be removed at each scan.

Once a week |

Once a month |

Only when the phone starts to brake |

I never check.-->

What threats are blocked by “Application Security” Xiaomi

Xiaomi’s security system handles most common threats, but it’s important to understand its limitations.

• 🦠 Malignant APK-Files – blocks the installation of applications with viruses, spyware or advertising modules (adware).
• 🕵️ Spyware – Warns if an application tries to send your data to a third-party server (e.g., Pegasus or Cerberus).
• 🎣 Phishing sites – blocks clicks to fake pages of banks, social networks and payment systems.
• 🔋 Energy-intensive processes – closes applications that drain the battery in the background (e.g. cryptominers).
• 📱 Fake Updates – Warns of Fake Update Notifications MIUI or Google Play.

However, there are things that the system cannot handle:

• ❌ Social Engineering – if you enter your own password on a phishing site, MIUI It won't be able to prevent it.
• ❌ Zero-day vulnerabilities: new viruses not yet added to antivirus databases.
• ❌ Rooted devices – if you have root access, the security system becomes useless.

Critical nuance: in 2023 Researchers have discovered a vulnerability in the security module Xiaomi (CVE-2023-24805), signature-bypassing APK-The company has released a patch, but if your device hasn't been updated in a long time, the risk of infection remains.

⚠️ Note: If you install apps from third-party sources (not Google Play), always check the hash amount of the file before installing. MIUI I have not found a threat, it does not guarantee security.

Step-by-step: how to check your smartphone for viruses

If your Xiaomi has started to behave suspiciously (slow down, overheat, show unexpected ads), do a full check:

1. Open the Settings. → Security → Security of applications.
2. Press the scanner (the magnifying glass icon at the bottom of the screen).
3. Choose Deep Check (can take 5-10 minutes).
4. Once the scan is complete, the system will show a list of threats, and each will be confronted with a button called Delete or Ignore.
5. If you find a system threat (for example, in firmware), update MIUI through settings → The phone. → Updating the system.

If the scanner didn’t find anything, but there are problems, try:

• 🔄 Restart your phone in Safe Mode (press the power button) → Restart in Safe Mode. If the problem has disappeared, one of the installed applications is to blame.
• 📱 Check the permission list in Settings → Annexes → Revoke access to Camera, Microphone and Geolocation from suspicious programs.
• 🛡️ Install a third-party antivirus (such as Malwarebytes) to re-check.

💡

If the Xiaomi scanner has removed the desired application, restore it from the cart (Settings) → Annexes → Recycle Bin) and add exceptions to the security menu.

How to protect personal data from leaks on Xiaomi

One of the biggest security weaknesses is app permissions, and many programs ask for access to data they don't need to work with, like a flashlight doesn't need access to your Contacts, and a game doesn't need access to your Contacts. SMS. Minimize the risks:

1. Open Settings → Applications → Permissions Management.
2. Select a category (e.g. Camera or Microphone).
3. Disable access for all applications except those that actually need it (e.g., Zoom for microphone or Google Maps for geolocation).

Also note:

• 📍 Geolocation – disable it for apps that don’t use maps (e.g. TikTok or Instagram don’t need constant access to your location).
• 📞 Call log and SMS — Allow only banking applications and instant messengers.
• 📂 Files and Media – Restrict access to apps that don’t work with photos or documents.

For additional protection:

• 🔒 Enable Application Locking in Settings → Security → Application blocking: This will allow you to set a password or fingerprint to access selected programs (for example, WhatsApp or Gallery).
• 🌐 Use it. VPN Connecting to public Wi-Fi networks to prevent traffic interception.
• 📋 Check the list of devices connected to your Mi Account (Settings) regularly. → Xiaomi account → Devices! Remove all unknown gadgets.

Common User Mistakes and How to Avoid Them

Even experienced Xiaomi owners sometimes make mistakes that nullify all security efforts, and here are the most common ones:

1. Turning off automatic scanning – many users turn off this feature to save battery power, but thereby strip themselves of basic protection.
2. Ignoring updates - firmware MIUI It receives security patches regularly, but if it is not installed, the device remains vulnerable.
3. Installation APK Unknown sources – even if a file is downloaded from a “reliable” forum, it may contain Trojans.
4. Use simple passwords – many people lock the screen with a code of 1234 or 0000, making the phone an easy target for thieves.
5. Connecting to public Wi-Fi without VPN — At a cafe or airport, your traffic may be intercepted by intruders.

To avoid these mistakes:

• 🔄 Set up Auto Security Update in Settings → The phone. → Updating the system.
• 🔐 Use a complex password or pattern lock (at least 8 characters, with letters and numbers).
• 📱 Install Google Play Protect as an additional layer of protection (Play Store) → Settings → Play Protect).
• 🛡️ Regularly check the list of installed applications for suspicious programs.

💡

The most common vulnerability on Xiaomi is not viruses, but human error, and most data breaches are due to users’ negligence, not firmware flaws.

Comparing Xiaomi’s security with other brands

How does Xiaomi cope with protection compared to its competitors? Let’s look at the key differences:

Xiaomi is in the middle of a security system that is not as advanced as the Samsung Knox, but not as limited as Google’s, and the main advantage is the flexibility of settings: you can manually control permissions, exceptions, and even disable individual scan modules, but the same is true: inexperienced users can accidentally loosen the protection.

If you’re looking for maximum security, like storing business data on your phone, you’d better choose Samsung or Google Pixel, and if you’re looking for a balance between security and convenience, Xiaomi is perfect.

FAQ: Frequently Asked Questions About Xiaomi Security