RSA revealed in an open letter posted to its website that it has been the target of an attack. The attack against the RSA network is an example of a new breed of security threat aimed at flying under the radar longer and going after bigger payoffs. Attackers with the skill to bypass network security controls, and the patience to do so over time to avoid overtly suspicious activity that might lead to detection, can eventually achieve major network breaches and data compromise. Two-factor authentication is a preferred method of providing stronger security than is provided by username and password alone.”]
Source: https://www.csoonline.com/article/2127832/rsa-securid-hack-shows-danger-of-apts.html