The vulnerabilities that have always existed in different types of software, can become dangerous and problematic with all the problems that these bring and that is why we see one of the many systems affected by these vulnerabilities, this time being in the Email which uses a lot if not most of online users.
Some Security Vulnerabilities on Email
When we talk about breaching the security of a mail server there are hundreds of risks which they face. Now what are these?
▸Unauthorized access to data
A very widespread type of attack is when it comes to bypassing the authentication procedure to gain access to data. The first thing to do to avoid this is to set strict requirements for a password, which is used to access the server. This prevents the password from being cracked by brute force, which is one of the universal ways to avoid authentication. Everything else depends on the type of server. Different types of servers use different operating systems, interfaces, etc.
▸Threat of data leakage
Obtaining personal data is one of the key objectives for hackers. When email is sent over the Internet, it goes through unprotected communication channels. Passwords, user names and messages can be intercepted. To prevent this, you need to encrypt both incoming and continuous mail. Therefore, the SMTP, POP3, and IMAP protocols must be encrypted with SSL / TLS.
▸Unwanted mail
The problem of spam is one of the most relevant when it comes to emails. From a server security point of view, we can divide the spam threat into two categories: Sending external spam messages to your own customers and sending external spam messages to other clients. In this case, the server acts as an Open Reply.
To avoid this threat, you must use content filters. They are installed on the mail server or in a proxy application, installed to protect access to the server (such as firewall, proxy component of the mail server, etc.)
