There’s speculation that attackers gained some information about the “secret sauce” for RSA SecurID and its one-time password authentication mechanism, which could be tied to the serial numbers on tokens. The question is whether customers are likely to feel a loss of confidence in using the two-factor authentication system. Security experts wonder whether a security fix may be coming because of the discovery of the breach at RSA may well happen. But a massive change for tokens and the RSA authentication server would be no trivial matter for customers to undertake.”]
Source: https://www.csoonline.com/article/2127819/did-hackers-nab-rsa-securid-s-secret-sauce-.html