Incoming Message Access Protocol (IMAP) is a standard protocol used by most of the web-based email users while they access their email accounts from an email client. A copy of all the messages you receive through the IMAP protocol will be saved on its server. The IMAP protocol uses the SSL security feature for encryption. But, there are Imap security concerns. It is because IMAP uses some complex protocols to secure your account.Basically, the IMAP protocol was designed to accept the plaintext login credentials.In most of the cases, there is a chance for this feature to be misused by hackers.Another cause that leads to the IMAP Security issue is the lack of support for strong authentication.