Which of the following is a common indicator of a phishing attack?

A common indicator of a phishing attack is unexpected wire transfer requests. Phishing attacks often utilize social engineering techniques to manipulate individuals into disclosing sensitive information or performing actions that compromise security.

In many instances, attackers impersonate legitimate individuals or organizations to create a sense of urgency or authenticity. For example, an email may appear to come from a trusted source, instructing the recipient to quickly send funds to a specified account. The unexpected nature of such requests may raise alarms, especially when they deviate from normal business operations or established procedures. This tactic is especially prevalent in business email compromise (BEC) schemes, where attackers often seek financial transactions based on deceptive correspondence.

While altered DNS settings, unusual device usage, and significant firewall breaches can be indicators of various types of security incidents or breaches, they are not as closely associated with the specific behavioral patterns typically observed in phishing attacks.