This document summarizes research on email security threats like phishing, spam and fraud. It discusses several studies that have proposed techniques to detect phishing emails using methods like blacklist/whitelist filtering, textual and URL analysis, machine learning algorithms and social engineering schemes. One study developed a Link-Guard algorithm that was able to detect 96% of anonymous phishing attacks. Another proposed a proactive approach called Pguard that aims to shut down phishing attacks at their source by warning web hosts. Future work discussed includes improving accuracy rates and automating detection and response mechanisms.