Which of the following is a common type of security incident that organizations encounter?

Phishing attacks are a prevalent type of security incident that organizations frequently encounter. This tactic involves cybercriminals sending deceptive messages, often through email, to manipulate individuals into revealing sensitive information, such as login credentials or financial information. The success of phishing attacks is largely due to their ability to exploit human vulnerabilities, making them a significant concern for organizations aiming to protect their data and resources.

In contrast, server upgrades and software development are routine operational tasks that, while they may present risks if not managed properly, do not inherently constitute security incidents. Physical inventory checks are also standard processes typically unrelated to security incidents. Overall, the existence of phishing as a direct threat to organizational security underscores its classification as a common security incident.