Have you ever received an email with an attachment bearing the .html or .htm extension? These extensions denote web pages. Clicking on them will redirect you to an external website. It’s crucial to approach such attachments with caution because their destinations may be unknown. Avoid clicking on them if you can. If necessary, request the sender to provide a link to a cloud service, such as Google Drive, as an alternative. Or try an Internet Security Software like Total Defense Premium with anti-phishing technology that blocks suspicious websites.