Threats to Email Security and How to Prevent Them
Most businesses and other sectors prefer using email as a method of communication. Today, there are many threats to email security, and although email is very convenient and easy to use, these threats can compromise messages that we transmit and the attachments that we send. Every time you send an email, you face a lot of threats including the interception of messages, modification or origin or content, forgery of content or origin by an outsider, forgery of origin or content by the recipient, or the denial of massage transmission.
Email containing confidential data or financial data may be sent to a recipient inside the company of to someone outside the company. If your email is not encrypted, then it can be monitored and intercepted in many ways. The contents of the email is at risk of being read, copied or modified by unauthorized and potentially malicious users. 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.
If people are able to gain access to your email in your network, then you will definitely allow malicious people to be able to copy emails that ask for sensitive information. Fraudulent mails or phishing as it is common called asks for personal information and other important data.
Phishing emails look exactly like the original complete with company logo, color scheme, and format. It could be a bank or an internet vendor asking for information. This type of deceptive attempt to get information is called social engineering. The phisher also puts links in the email which is not the same link but he changes it to his own. You can be asked to do immediate actions like logging in to your account. They will also let you enter passwords and account names into a web page created by the phisher himself. Below are some important things that can help prevent phishing and forgery in emails.
A service that controls and logs access to systems, resources, and applications that protects against unauthorized use is called access control. 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. The use of digital signatures is one integral mechanism for this service. Two ways to authenticate identities is through unilateral or mutual authentication. Both parties verify each other in mutual authentication. Unilateral authentication, on the other hand, requires only one party to verify his identity.
If data is transmitted without being modified in transit then there is confidentiality and integrity. Data in transit is protected by confidentiality while unauthorized modification is ensured by integrity.
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