After connecting to an unsecured network, what type of Internet activity could be monitored by an attacker?

The correct answer is that all Internet requests sent after the connection to an unsecured network could be monitored by an attacker. When a device connects to an unsecured network, such as a public Wi-Fi hotspot, the data transmitted over that network is often not encrypted. This means that any data packets sent and received can potentially be intercepted by someone else who is also connected to that network.

Attackers can utilize various techniques, such as packet sniffing, to capture all kinds of data exchanges. This encompasses requests made by web browsers, email communications, login credentials being transmitted to websites, and even activities on applications that rely on the Internet for data. Essentially, anything that is not encrypted and transmitted over that unsecured connection can be monitored. This includes not just emails and website browsing, but all types of Internet requests, making the vulnerabilities of unsecured networks significant.

This context clarifies why the other options are limited in scope or inaccurately represent the capabilities of an attacker on an unsecured network. They don't encompass the full range of data that can be compromised in such situations.