1. The document discusses phishing attacks, which involve tricking users into providing private information through fraudulent emails or websites. 2. Phishing attacks are classified into two categories: social engineering attacks, which use psychological tricks, and malware-based attacks, which install harmful software. 3. More recent phishing scams activate positive feelings like hope and gratitude through appealing to emotions and incorporating elements of social networks, which makes the scams more effective at gaining user trust and spreading widely.