Phishing in the Inbox: A Systematic Examination of Email-Based Cyber Threats

The main problem in today’s internet era is malicious email which is in the form of phishing email, which may contain malicious links or it may copy some malicious codes which reside at victim site in form of malware. There is much difficulty to differentiate between legitimate and malicious email, as malicious emails look like same as legitimate email. The main motivation or objective of malicious emails is financial loss to individual who receives that email, or it may relate to gather sensitive information of the receiver. There are numerous anti-malicious email filtering techniques are available, yet the problem is still not solved properly. The main topic related to malicious email detection is email mining, extracting its contents, and applying some classification algorithms. The malicious emails are characterized by some features which are used as a parameter for detection of malicious email. This paper reviewed ways to detect and counteract against phishing and current malicious email mitigation techniques by different researchers; different evaluation techniques of these filtering methods are carried out in literature survey.