Which of the following could be a characteristic of a phishing scheme?

A phishing scheme is typically characterized by deceptive tactics designed to obtain sensitive information from individuals, often masquerading as a trustworthy entity. One hallmark of phishing is the use of anonymous emails that solicit personal or confidential data from recipients. This method exploits the recipient's trust and can be easily accomplished due to the relative anonymity of email communication.

The correct answer encompasses the nature of phishing through anonymous emails, which is a central tactic used in these schemes. Phishing can also indeed involve manipulation through telephone calls or voice messages, often referred to as vishing (voice phishing). However, the question specifically seeks a characteristic of phishing schemes overall, where anonymous emails are prominently recognized.

While it is true that secure websites can collect information, these are not typically associated with phishing schemes, as legitimate organizations usually use secure channels for data collection. Thus, the primary identification of phishing lies in the anonymous and deceptive nature of the communication. Therefore, the characteristic most associated with phishing is requesting sensitive information through anonymous emails, which effectively captures the essence of this fraudulent activity.