You have configured a virtualized Internet browser on your Windows XP professional computer. Using the virtualized Internet browser, you can protect your operating system from which of the following?

Brute force attacks target authentication systems by guessing credentials, a network-level threat that browser virtualization does not protect against.

Mail bombing is an email flooding attack directed at a mail server or inbox and is unrelated to browser isolation technology.

DDoS attacks overwhelm network resources from external sources and cannot be mitigated by isolating a single browser instance on a local machine.

Browser virtualization creates an isolated execution environment where all web activity, including malicious code from unknown sites, is contained within the virtual sandbox. Any malware that executes within the virtualized browser cannot write to or modify the host OS file system or registry, effectively neutralizing drive-by downloads and malicious script execution.