Why You Should Avoid Installing Apps from Unknown Sources

· 7 min read
Why You Should Avoid Installing Apps from Unknown Sources
Photo by Rami Al-zayat / Unsplash

While official app stores like Google Play and Apple App Store provide a secure and trusted platform for app installation (though not always), some users are attracted to the idea of sideloading apps from unknown sources. Sideloading refers to the practice of installing apps from sources other than the official stores. While it may seem tempting to explore alternative avenues for app installation, sideloading apps can pose significant risks to your device and data security.

There are legitimate reasons for installing apps outside official stores, such as when using De-Google phones that completely remove Google and its services and when using apps that have not been approved by Google such as New Pipe but are actually safe (although these ones are very few). However, this means that you are actually trusting other people and you will need to verify their claims, a task that can be too cumbersome. Whatever the reason for installing apps from untrusted sources may be, there is always a danger that comes with it.

The Dangers of Sideloading Apps

When you install apps from official app stores, you can rely on the strict security regulations and quality control measures implemented by the store operators. These measures ensure that apps undergo thorough scrutiny and testing to identify and eliminate any potential security vulnerabilities or malicious code. Even when malware does make it to these stores, it is quickly identified and removed. When you install apps from unknown sources, you bypass these safeguards and expose yourself to various risks, including but not limited to:

1. Security Risks

Apps sourced from unknown and unverified platforms may contain malware or other harmful software that can compromise your device’s security and steal your sensitive data. Malicious apps can take various forms, such as:

  • Adware: These apps display unwanted advertisements and may collect personal data without your consent.
  • Spyware: Spyware monitors your device activity, including keystrokes, and can steal your personal information, such as passwords and credit card details.
  • Phishing: Cybercriminals often distribute phishing apps through unknown sources, posing as trustworthy sources to trick users into providing sensitive information. These apps can mimic legitimate apps and deceive users into inputting their login credentials or capturing other confidential data.
  • ransomware: Cyber criminals can use unknown sources to distribute malware. A good example is when criminals distributed ransomware disguised as a beta version of a game called Cyberpunk 2077
  • malware: A popular alternative app store was infected with a Trojan and began distributing malware

2. Stability Issues

Apps obtained from unknown sources may not undergo the same level of testing and quality assurance as those available on official app stores. As a result, these apps are more prone to stability issues such as:

  • Compatibility: Sideloaded apps may not be optimized to work seamlessly with your specific device, operating system, or other installed apps, resulting in crashes or poor performance.
  • Performance: Poorly coded or optimized apps can consume excessive device resources, leading to battery drain, slow device performance, or memory overload.
  • Errors and Crashes: Apps sourced from unknown platforms may contain bugs and errors that can cause them to crash or malfunction, disrupting your user experience.
  • Interference with Other Apps: Sideloaded apps may conflict with other apps on your device, leading to compatibility issues or causing other apps to stop working correctly.
  • No Updates: sideloaded apps often lack proper support and updates from developers, making it challenging to resolve any issues or receive timely assistance.

Installing apps from unapproved sources can expose you to legal risks and consequences such as:

  • Copyright Infringement: Apps obtained from unknown sources may include pirated copies of paid apps or copyrighted content without proper authorization, potentially resulting in copyright violations and legal actions.
  • Intellectual Property Infringement: Sideloaded apps may infringe upon trademarks, patents, or other intellectual property rights without permission, which can lead to legal disputes.
  • Privacy Violations: Certain apps sourced from unknown platforms may collect and process your personal information in ways that violate privacy laws, compromising your data security and privacy rights.
  • Non-compliance: Sideloaded apps may fail to comply with the laws and regulations of specific countries or regions, making their installation and use subject to legal penalties and consequences.

Understanding the Risks on Different Platforms

Sideloading apps is more prevalent on some platforms than others. Let’s explore the risks and considerations associated with sideloading apps on popular operating systems.

1. Sideloading Apps on Android

Android offers more flexibility when it comes to sideloading apps compared to other platforms. Users can find APK packages from various websites and enable the “Unknown Sources” setting to allow installations from third-party sources. However, this freedom comes with increased responsibility and risks.

While sideloading apps on Android may provide access to a wider range of apps, it also exposes users to potential security threats. Without the rigorous review processes employed by official app stores like Google Play, there is no guarantee of the apps’ safety and security. Malicious apps can easily make their way into unofficial platforms, making it crucial to exercise caution when sideloading apps.

2. Sideloading Apps on Apple Devices

Apple has adopted a strict stance against sideloading apps on its devices. The company maintains tight control over its App Store ecosystem to ensure the security and privacy of its users. The recent iOS 17 update even comes with more security and privacy features. As a result, sideloading apps on iOS devices requires jailbreaking the device, a process that voids the warranty and introduces significant security risks.

By jailbreaking an iOS device, users open the door to potential malware infections and compromise the device’s overall security. Apple’s stringent app review process and curated App Store environment are designed to protect users from malicious apps and ensure a consistent user experience.

3. Sideloading Apps on Windows 11

A large percentage of the apps we install on Windows devices often come from manufacturers’ websites and not the official Windows store. This leaves Microsoft Windows users vulnerable, especially because there are often many websites claiming to offer the software in question.

For paid software, people tend to go for the “cracked versions” of the software, which claim to offer the product for free, However, research has shown that a good percentage of this cracked software has malicious code as well as violating software copyright laws for different countries. As someone said, if it is free you are the product.

Windows 11 has also introduced support for sideloading Android apps, allowing users to run them on their computers. While this expands the app options available to Windows users, it is essential to exercise caution when sideloading Android apps on Windows 11.

4. Sideloading Apps on Streaming Platforms

Streaming platforms like Amazon Fire Stick, Fire TV, and Kindle also offer the option to sideload apps. However, users should approach sideloading with caution and follow trusted sources and guides to ensure the safety and security of their devices.

Protecting Yourself: Best Practices for App Installation

To ensure the security and privacy of your devices and data, it is crucial to follow best practices when installing apps.

1. Stick to Official App Stores

The most reliable way to install apps is through official app stores like Google Play and Apple App Store. These platforms employ stringent security measures to review and vet apps before making them available for download. This will help you significantly reduce the risk of installing malicious or insecure apps.

2. Use the Winget package manager on Windows.

For Microsoft Windows users, the recommended way of installing software is through the recently introduced Winget package manager. It works just like apt on Debian-based Linux distros or any other package manager. While it works well on the command line or PowerShell, there also exists a graphical interface that is also simple to use. Here is a full guide.

3. Verify App Permissions and Reviews

When installing apps from official stores, it is essential to review the app permissions and user reviews. Pay attention to the permissions requested by the app and ensure they align with its intended functionality. If an app requests excessive permissions, consider alternatives or contact the developer for clarification. User reviews can also provide valuable insights into the app’s reliability and security.

4. Avoid Unknown Sources and Third-Party Stores

Sideloading apps from unknown sources or third-party stores should be avoided whenever possible. These sources lack the rigorous app review processes implemented by official stores, making them more susceptible to hosting malicious apps. By restricting app installations to trusted sources, you can minimize the risk of downloading compromised apps.

5. Reach Out to Developers

If you cannot find a specific app on official stores, consider reaching out to the developers directly. Inquire about the app’s availability and reasons for not being listed on official stores. Developers may provide insights into the app’s status and future plans for distribution. Waiting for the app to become available through official channels is a safer option than resorting to unknown sources.

6. Enable Security Features

Make use of built-in security features provided by your device’s operating system or security apps. Features like Google Play Protect for Android and Apple’s layered approach to app security in the App Store can help detect and mitigate potential threats. Regularly update your device’s operating system and security apps to benefit from the latest security enhancements.

How to turn off installation of unknown apps in Android 8 and later

In the latest versions of Android, the relevant feature is called Install unknown apps, and it is enabled separately for each app.

If you have allowed installation from unknown sources for some apps, you will need to disable it separately for each app. Here’s how to do it:

  • Open the system settings on your device;
  • Choose Privacy Protection;
  • Select Special Permissions;
  • Select Install unknown apps;
  • Check what is listed under each app installed on your phone. If you see Allowed, select the app in the list and disable the installation of unknown applications.

The names of the settings in stock Android. Manufacturers often modify the standard Android interface, so some menu items may have different names on your phone.

6. Educate Yourself and Stay Informed

Stay informed about the latest security threats and best practices for app installation. Keep an eye on security advisories and news updates related to app vulnerabilities and malware. Educate yourself about common tactics used by cybercriminals to distribute malicious apps and phishing attempts.


While the allure of accessing a wider range of apps may be tempting, sideloading apps from unknown sources poses significant risks to your device and data security. Security vulnerabilities, malware infections, compatibility issues, and legal consequences are just some of the potential pitfalls associated with installing apps from untrusted sources. You would rather prioritize your privacy and security by making informed decisions when it comes to app installation.

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