Which of the following is an example of Phishing?

Phishing is a type of cyber attack aimed at obtaining sensitive information from individuals, typically through deceptive communications, primarily emails. In the context of the question, a suspicious email is a classic example of phishing.

These emails are designed to appear legitimate and often mimic a trusted source, such as a bank or popular website. They may request personal information, prompt the recipient to click on a malicious link, or download a harmful attachment. The deceptive nature of these emails seeks to trick individuals into providing confidential data or inadvertently installing malware on their devices.

Other options, like firewall breaches, network slowdowns, and unauthorized access, deal with security vulnerabilities and breaches in systems but do not specifically represent the technique of phishing. They involve different aspects of cybersecurity challenges rather than the direct act of attempting to deceive an individual into divulging personal information through misleading emails.