A Guide to Email Security
Email has been the preferred method of communication in many sectors since the dawn of the internet. Using email may be very easy and convenient for most of us, but we must take care to protect the data that we are transmitting, whether in its body or the attachments that you send. Interception of messages, modification of origin or content, forgery of origin or content by an outsider, forget of content or origin by the recipient, or the denial of message transmission are just some of the threats that you can face every time you send an email over the internet or a network.
Email containing confidential data or financial data may be sent to a recipient inside the company of to someone outside the company. There are many ways by which any email that you send which is not encrypted can be monitored and intercepted. Unauthorized and malicious users can easily read, copy, or modify the content of your email. These malicious users can empty your financial accounts, run charges on your credit cards, apply for loans, etc, using the personal data that they have retrieved from an email.
You allow potential threats to re-create email from a company asking for sensitive information is email is monitored on a network. They call this phishing or fraudulent mails which ask people for important personal information like password or account name.
It is difficult to tell phishing emails from the real one because they look exactly alike to the last details like company logo, color scheme, and format. It could be a bank or an internet vendor asking for information. Social engineering is the name given to this deceptive attempt at getting important information from people. The links in the email are changed to the one used by the phisher. Immediate actions are demanded in the emails including logging on to your accounts. Phishers create web pages where you will be asked to enter your account name and password. Below are some important things that can help prevent phishing and forgery in emails.
There has to be access control which is a services that controls and logs access to systems, resources, and applications and protects against unauthorized use. To help prevent unauthorized persons accessing your email messages sent to someone else on a network, the network has to be secured using passwords or account names.
If you want to be protected from disguised attacks, authentication is important. One integral mechanism for the services is the use of digital signatures. Unilateral or mutual authentication are the two ways to authenticate identities In mutual authentication, both parties verify each other. Only one party verifies its identity in unilateral authentication.
If data is transmitted without being modified in transit then there is confidentiality and integrity. Confidentiality protects data in transit and integrity protects unauthorized modifications.