This article mainly introduces the definition and background of spam.
The Definition of Spam
The Internet Society of China defines spam emails as unwanted emails that are sent to large numbers of users and contain malicious or false information such as false senders. Spam emails have the following characteristics:
A large number of mass emails with the same or similar contents;
Forging /impersonating others to send email;
The mail header is not standardized, missing, such as: set time is the future time;
Deliberately adding and mixing various contents in the mail to avoid inspection;
The emails contain malicious information such as viruses and phishing URLs;
The emails contain contents that violate laws or regulations, such as pornographic contents.
The emails contain offensive content that is likely to be reported by recipients.
The Hazards of Spam
Email service is one of the most widely used services on the Internet. Spam emails have become a rampant threat to information security due to the open and disseminated nature of the Internet. Spam emails have the following hazards:
Reducing the quality of communication services: Spam emails consume network bandwidth and congest email servers which reduce the operating efficiency of the entire network.
Interfering with the normal work and life of recipients: Recipients must take time, exert effort, and bear costs to handle large numbers of spam emails. The need to filter out large numbers of spam emails and retain genuine emails reduces work efficiency.
Leading to information leaks: There are an increasing number of dangerous and hard-to-identify phishing emails. These emails can be used to steal corporate or personal information for fraudulent purposes.
Endangering the society: A few people with ulterior motives can use spam emails to spread false or harmful information, seriously endangering society.
Affect the service image of ISPs: Hosts that send a large number of spam will be blacklisted by international anti-spam organizations, resulting in restrictions on the host's access to the website or sending emails.
The Significance of Anti-spam System
Enterprise and individual users are increasingly vulnerable to email attacks. Driven by profits, virus and spam spreaders are constantly developing new technologies to circumvent email filters. Anti-spam systems protect email systems against attacks.
It intercepts spam sent inside and outside the system, maintains the reputation of the mailbox's outgoing IP and the smooth outgoing channel, and ensures that your email is accurately delivered to the other party's mailbox. External interception of spam sent by other email systems and spam bombing from various channels ensures the safety and cleanliness of your mailbox.