Which security measure is in place for auto-update installers of Dynatrace OneAgent?

The correct choice highlights an important security feature of Dynatrace OneAgent's auto-update installers, which is that these installers are signed and verified. This signing process ensures that the installer package has not been tampered with and originates from a trusted source. By verifying the signature during installation, users can be confident that the software they are installing is authentic and safe to use, reducing the risk of malicious software being introduced into their environment.

The other options suggest practices that could pose significant security risks. Unencrypted communication could lead to data interception during the update process, while unsigned installers would allow potentially harmful software to be disguised as legitimate updates. Moreover, immediate updates without any verification could lead to unauthorized or unstable versions being installed, compromising system integrity and security. Thus, having installers that are both signed and verified plays a crucial role in maintaining the overall safety and reliability of the Dynatrace OneAgent update process.