The term 'Automated Spam Sender' can be abbreviated to 'BOT', which is a three-letter acronym. An automated spam sender is a computer program that sends out unsolicited emails, often containing malicious content, to a large number of recipients. These emails are usually sent in bulk and are designed to spread malware or other malicious software. Automated spam senders are often used by cybercriminals to spread malicious content and phishing scams.