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The Best Practices for Mobile Security 

April 25, 2025 • César Daniel Barreto

Two decades ago, the thought of completing tasks like shopping, research, and financial transactions from a device in your pocket would have seemed unbelievable. Today, however, modern smartphones have made these abilities and countless others a reality, ushering in a lifestyle centered around technology. 

While this has made tasks more convenient and expanded entertainment, education, and communication opportunities, it has also introduced myriad new risks. Chief among these is your personal information falling into the hands of somebody who seeks to use it for illicit purposes. 

Therefore, staying safe while using mobile phones has become more crucial than ever. Although these devices have built-in protections, there are several best practices you can follow to stay on top of mobile security.  

Use Strong Authentication Methods 

The first and easiest way to ensure that your information remains secure on your mobile device is to use strong authentication. The form of authentication used varies depending on the app or device you use. 

Strong Passwords 

Ensure the use of strong passwords. This applies to your general phone account (Apple ID or Google Account) and any secondary accounts you may sign into while using particular apps or websites. 

Microsoft recommends that a strong password include a minimum of 12 characters, upper- and lower-case letters, and a variety of numbers and special symbols. While 12 characters is the minimum, passwords longer than 14 characters tend to be stronger and harder to hack, making them preferable. 

Biometric Authentication 

Most modern smartphones allow you to register your biometric data for added security. This data can range from your fingerprint to your facial structure (for facial recognition) and can also include things such as your retina signature.  

The biometric information stored on your device is often shared with third-party applications, allowing you to enable biometric security when accessing them, too—irrespective of whether or not your phone is unlocked. This provides a safe way to ensure that only you can access your information. 

MFA (Multi-Factor Authentication) 

Finally, many platforms support multi-factor authentication. This requires verifying your sign-in with a one-time PIN, even if the correct password or biometric data was used. Typically, this one-time PIN will be sent via SMS or email. Alternatively, authentication apps can generate one-time PINs that expire after a short time. 

It should be noted that all these methods require regular maintenance to make them extra secure. Therefore, to maintain security, avoid using the same password for multiple accounts, update your passwords regularly (at least every three months), and avoid using the “remember password” options unless using a secure password manager

Always Use Secure Networks 

Even if you follow the best authentication practices, your information may still be at risk if you connect to insecure networks or visit compromised websites. As such, ensuring that you follow strict network security practices, which come in various forms, is also essential to staying safe. 

VPNs (Virtual Private Networks) 

VPNs are still one of the most popular methods for ensuring a secure internet connection. By encrypting the traffic between your device and your chosen VPN server, a VPN makes it more challenging for hackers to gain background access to your device and steal information from it. 

Although many VPNs require a paid subscription, a number also offer free tiers. These operate as effectively as paid options but often have speed or bandwidth restrictions. For general use, however, these bandwidth restrictions are usually sufficient. 

Connectivity Management 

To ensure network security, turn off all auto-connect features on your device, including Wi-Fi and Bluetooth connections. Disabling these will prevent your device from automatically connecting to a network without your consent and can help limit others from connecting to you without your knowledge. 

Additionally, you should regularly review your saved networks and paired devices. In this process, you should remove any you don’t frequently use or trust. This is particularly important should you have previously connected to networks such as public Wi-Fi in restaurants, airports, or hotels.  

Keeping Your Device Secure 

Aside from authentication and connectivity, there are several easy methods to ensure that your device remains secure at all times.  

Uninstall Unused Applications 

Among the best methods to ensure that your device cannot be accessed without your knowledge is to uninstall any applications you don’t actively use. While some modern devices may place these apps in a “deep sleep” state, uninstalling them is more secure. They can also always be redownloaded if required.  

Software Updates 

All device manufacturers regularly release software updates that contain security patches and fixes. These updates remove any known (or unknown) vulnerabilities and ensure that your device’s operating system is secure. Therefore, never defer updates, and ensure your device is always on the latest software version. 

Manage Permissions 

Various applications are limited in their abilities based on the permissions granted to them. To boost your security, regularly review the permissions each of your apps has and remove those that aren’t essential to the app functioning properly. Doing this will help limit apps’ authority to complete specific processes and tasks on your device.  

Conclusion 

As the digital landscape evolves, there are more ways to transact and stay entertained than ever before. Netflix’s reach is global, fintech is the preferred way for many people to spend and receive money, and Casinos.com is accepting players from Louisiana—highlighting just how expansive and accessible online platforms have become. As a result, the need to keep your device secure has never been greater. By following the above practices, you can ensure that your information remains in your hands and under your control. 

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César Daniel Barreto

César Daniel Barreto is an esteemed cybersecurity writer and expert, known for his in-depth knowledge and ability to simplify complex cyber security topics. With extensive experience in network security and data protection, he regularly contributes insightful articles and analysis on the latest cybersecurity trends, educating both professionals and the public.