More than 80% of emails are spam, which is defined as unwanted e-mails, usually advertising, which are randomly sent to large numbers of users. It is not a direct threat, but it is a serious annoyance for Internet users for the following reasons:
- Wastes time. Information that is not of interest to the user has to be deleted.
- It can make you losevaluable information . Some valid emails are classified as spam by some filters, which causes us to lose useful and even vital information.
- Spam is also used to send different types of viruses or phishing attempts discussed at various points in this document.