Guard Your Android Phones Against Loss of Data and Infected Apps

McAfee

Nov 19, 2025

11 MIN READ

Because Android uses an open source operating system, it usually gets a bad rap for being vulnerable to data loss and compromised apps as a result of malware, insecure app coding, unprotected cloud storage, outdated software, sideloading from untrusted sources, and even specific website vulnerabilities. Suffice it to say that any of these risks can be destructive and costly.

While Google addresses specific vulnerabilities, cyberthreats continue to evolve as criminals become more scheming or desperate. For these reasons, it is still best to exercise caution to protect the data on your device. In this article, we will share vital tips on how you can secure your device.

Essential tips for Android security

Determining if you’re vulnerable isn’t always easy. There are, however, some measures you can take to protect your device.

Keep your Android OS and security patches updated

Your first line of defense against Android vulnerability threats is maintaining current software. Android security patches fix security weaknesses that cybercriminals actively take advantage of to access your personal data, install malware, or take control of your device. When you delay updates, you leave known security gaps open for attackers to exploit.

To enable automatic updates, navigate to Settings > System > System update > Advanced settings, then toggle on “Automatic system updates.” For Google Pixel devices, security updates typically arrive monthly, while other manufacturers may have varying schedules.

On top of this, set your Google Play Store to auto-update apps by opening the Play Store, tapping your profile picture, going to Settings > Network preferences > Auto-update apps, and selecting “Over any network” if you have unlimited data or “Over Wi-Fi only” to preserve your data plan.

Install apps only from Google Play Store and verify developer permissions

One of the most effective Android phone security best practices is restricting app installations to the Google Play Store. Sideloading apps from unknown sources significantly increases your risk of installing malware, spyware, or apps with hidden malicious functionality.

Before installing any app, examine the permissions it requests. Apps asking for excessive permissions should raise your suspicions. Navigate to Settings > Apps > Special app access > Install unknown apps and ensure all toggles are disabled.

In addition, choose apps with consistent positive ratings and active developer responses to user concerns. Google’s Play Console policies provide guidelines for safe app development, but your vigilance remains essential.

Enable Google Play Protect and Safe Browsing in Chrome

Google Play Protect scans over 125 billion apps daily for malware and policy violations. While not perfect, this automated screening catches the majority of malicious apps before they reach your device, and even detects them after installation. In contrast, apps outside this ecosystem lack this protection layer.

Activate Play Protect by opening Google Play Store, tapping your profile picture, selecting “Play Protect,” and ensuring both “Scan apps with Play Protect” and “Improve harmful app detection” are enabled. This service runs automatic security scans and can remove or disable harmful apps even after you’ve installed them.

For comprehensive, real-time protection against phishing sites, malware downloads, and suspicious web content, enable safe browsing Android features in Chrome. Open Chrome, tap the three dots menu, go to Settings > Privacy and security > Safe Browsing, and select “Enhanced protection.” This setting checks URLs against Google’s constantly updated database of dangerous sites.

Use strong screen lock, biometric authentication, and 2FA

Modern Android devices offer multiple authentication methods, and using them strategically provides layered security for your most sensitive information. Set up a strong screen lock by going to Settings > Security > Screen lock and choosing either a complex PIN with at least 6 digits, a pattern with at least 6 points, or a password that combines letters, numbers, and symbols.

Enable biometric authentication, whether fingerprint and/or facial recognition, as an additional layer, but always maintain a strong backup PIN or password since biometrics can be circumvented.

For critical applications containing sensitive data such as banking apps, password managers, email clients, and social media, enable two-factor authentication (2FA) where possible for extra security.

Enable automatic cloud backups and device encryption

Android’s built-in backup and encryption features provide essential protection against data loss from device theft, hardware failure, malware attacks, or accidental deletion, forming a crucial part of your Android incident response strategy.

Enable automatic backups of your app data, call history, and device settings by navigating to Settings > System > Backup, then toggle on “Back up to Google Drive.” You can set the frequency to daily. For photos and videos, enable Google Photos backup with high-quality or original quality settings based on your storage plan.
Device encryption can be activated through Settings > Security > Encryption & credentials > Encrypt phone. Modern Android devices (Android 6.0+) typically have encryption enabled by default, but you will need to verify this setting. Google’s Android backup service documentation provides detailed information on what data is protected and how to manage your backup settings effectively.

Set up Google account recovery options

Your Google account serves as the master key to most Android functionality, so having an account recovery system can be invaluable to restore access to your device when local authentication methods fail. To ensure your recovery information is current, visit Security settings on your account profile, add a secondary email address that you can access independently, but avoid using another Gmail account as your backup. Include a mobile phone number for SMS verification, and consider adding multiple phone numbers if you frequently travel or change devices.

Google also provides one-time-use back-up codes that can restore account access when other methods fail. Download these codes and store them securely offline. Consider using a password manager like Google’s built-in option or a reputable third-party solution. Never store recovery codes in easily accessible digital formats like unencrypted text files or photos on the same device.

Configure Find My Device for remote management

Google’s Find My Device service provides powerful remote management capabilities that can prevent permanent data loss during Android vulnerability situations or lockout scenarios. This service allows you to locate, lock, or completely erase your device remotely.

To enable this feature, navigate to Find My Device through Settings > Security > Find My Device. Ensure that your location services remain active for this feature to function properly.

Take note that when you decide to remotely erase your data from your device, this feature completely wipes all local data but preserves the information you backed up to Google’s cloud services. Only use this option when you’re certain your back-up systems are current.

Implement comprehensive backup strategies

Android offers multiple backup solutions that transform potential data disasters into minor inconveniences. To store your photos, videos, SMS messages, and call logs, you can go to Settings > System > Backup and choose the frequency that matches your usage patterns, daily backups for heavy users, weekly for lighter usage.

For sensitive information that you would like to access even when offline, you might want to consider periodic local backups by connecting your device to a computer monthly and copying important files manually. Test your systems regularly by attempting to restore a small amount of data to ensure your backups work when needed and identify any gaps in your protection strategy.

Mobile incident response for Android

A mobile security incident can escalate from a nuisance to real damage in minutes, especially if an attacker can access your accounts, intercept messages, or install persistent apps. Speed matters when you respond, especially when prioritizing the high-impact steps that will stop the bleeding, regain control, and protect your data before you move on to cleanup and recovery. The actions below follow that order, so you can respond calmly and effectively even under stress.

Disconnect from untrusted networks immediately: Turn off Wi-Fi and mobile data instantly to prevent unauthorized access to your accounts or further data theft. Switch to airplane mode if you suspect active malware communication. Once disconnected, you can assess the situation and secure your device and accounts.
Use Find My Device to secure your device remotely: From a trusted computer or another device, go to Google’s Find My Device and lock your smartphone with a new passcode, display a message with contact information, or completely erase the device if necessary.
Change critical account passwords and enable MFA: From a trusted device, immediately update your passwords for critical accounts linked to your phone such as email, banking, social media, and other services containing personal or financial information. Add authentication methods where available and document which passwords were changed to avoid confusion later.
Review and remove suspicious apps and permissions: Check your device’s app installation history by going to Google Play Store > Menu > My apps & games > Installed and remove any you don’t recognize or trust. Next, review app permissions by going to Settings > Apps & notifications > Permission manager and revoke unnecessary permissions for location services, camera, microphone, contacts, messages, and administrative privileges.
Update your operating system: Ensure your device is running the latest version of its operating system by going to Settings > System > System update and enable automatic updates. Also update your installed apps by downloading new versions on your device’s app store. If your device is older and no longer receives security updates, consider upgrading to a supported model.
Restore from a known-good backup: Consider restoring your device to a trusted version, before the security incident occurred. A word of caution: this will remove any data created after the backup date, so weigh the security benefits against potential data loss.
File appropriate reports with relevant authorities: Document the incident and report it to appropriate authorities. If you suspect SIM swapping or carrier-related fraud, contact your mobile carrier immediately. Report identity theft to the Federal Trade Commission and Internet Crime Complaint Center. For incidents involving financial accounts, contact your bank, credit card company, and the major credit bureaus.
Monitor accounts and set up security alerts: Continue monitoring your accounts to detect any lingering effects of the security incident and prevent future compromises. Enable account activity notifications for all critical services, consider using a credit monitoring service, and review your credit reports regularly for unauthorized accounts or inquiries. Set up Google Alerts for your name and other personal information to catch potential identity theft attempts.
Get a mobile security solution: As Android devices become increasingly central to our lives, protecting them with a comprehensive mobile security solution has become essential. A robust mobile security app works continuously to identify and neutralize threats before they can compromise your device or steal your data.

Key capabilities of a reliable mobile security solution

When evaluating mobile security solutions for your Android device, focus on apps that offer comprehensive protection across multiple threat vectors. The most effective solutions combine several key capabilities into a single, user-friendly platform that doesn’t slow down your device or drain your battery.

Web protection and safe browsing: Safe browsing protection has become increasingly important as cybercriminals focus on phishing attacks and malicious websites that exploit smartphone vulnerabilities. Your mobile security solution should work seamlessly with your preferred browser, whether that’s Chrome, Firefox, or another popular option.
Wi-Fi security and network protection: Your security app should be able to monitor and check for signs of compromise and malicious hotspots, and alert you to networks attempting to intercept your data. It should also have virtual private network capabilities, encrypting your internet traffic even when connected to potentially unsafe networks to ensure that even if your connection is intercepted, your actual data remains unreadable to attackers.
Identity monitoring and privacy protection: A trusted security solution will include robust identity monitoring features that detect signs of unauthorized use of your personal information. Comprehensive identity monitoring encompasses credit monitoring and surveillance of the dark web, social media platforms, and data broker sites.

Final thoughts

Your Android device holds your most precious digital memories, important work files, and personal information, making it a prime target for cybercriminals who continue to exploit new vulnerabilities. While threats like remote factory resets and malicious web attacks can disrupt your daily digital routine, you do have the power to protect yourself against them by keeping your OS and security patches current, enabling Google Play Protect and built-in safe browsing features, maintaining regular backups of your essential data, and considering a comprehensive mobile security solution that provides real-time protection. For additional steps to safeguard your Android mobile life, visit McAfee’s security best practices.