Which practice helps to secure mobile devices against threats?

Utilizing strong authentication methods is a crucial practice for securing mobile devices against threats. Strong authentication enhances the overall security posture by ensuring that only authorized users can access the device and its data. This includes employing techniques such as biometric verification (like fingerprints or facial recognition), complex passwords, or two-factor authentication, which add additional layers of security. By doing this, even if a device is lost or stolen, unauthorized users will find it significantly more difficult to gain access to sensitive information or applications.

The other practices mentioned, while they may contribute to security, do not address user authentication directly. Disabling automatic updates can leave devices vulnerable to known security vulnerabilities by preventing the installation of vital patches. Reducing app permissions can limit the data that an application can access but does not inherently protect the device from unauthorized access. Keeping device brightness low has no impact on security and is more related to battery conservation than safeguarding sensitive data.