The e-mail was sent on March 3 and uploaded to VirusTotal, a free service used to scan suspicious messages. It was two days after RSA went public with the news that it had been hacked in one of the worst security breaches ever. If true, the finding sheds light on the kind of trickery, called social engineering by security pros, it takes to break into a major security company. Researchers at F-Secure, the company that discovered the message, believe it was the message that led to the RSA compromise.”]
Source: https://www.csoonline.com/article/2129425/was-this-the-e-mail-that-took-down-rsa-.html