When looking for a reliable multi-factor authentication (MFA) solution, it’s easy to get lost in the variety of options available on the market. To help navigate these choices, we continue our comparison series by examining how Protectimus stacks up against other well-known authentication vendors. In this article, we compare Protectimus and RSA. Both companies offer strong authentication solutions, but they approach the problem from different angles. RSA is positioned more broadly as an enterprise authentication and access platform with a strong passwordless and identity-centric direction, while Protectimus focuses on practical MFA flexibility built around open OATH standards, broad deployment choice, and straightforward implementation. This distinction matters because the right choice often depends less on which vendor is “better” in absolute terms and more on what an organization is trying to achieve. Companies building a broader identity, passwordless, and access ecosystem may lean toward RSA. Companies looking for flexible, standards-based MFA with strong OTP coverage, deployment control, and lower operational complexity may find Protectimus a stronger fit. Protectimus is based on open OATH standards such as HOTP, TOTP, and OCRA, which can simplify integration, migration, and long-term interoperability. RSA, in contrast, offers a broader enterprise platform with stronger emphasis on phishing-resistant passwordless authentication, federation, and identity workflows across cloud, hybrid, and legacy environments. Prefer short reads? See the comparison table below! 1. Server-Side Component Key Difference: RSA offers both cloud and on-premises deployment options as part of a broader enterprise authentication and access portfolio. Protectimus offers both a fully cloud-based MFA service and a comprehensive on-premise MFA platform built around the same practical OATH-based approach. RSA RSA provides cloud and on-premises authentication solutions for enterprise environments. Its current offering is broader than traditional MFA alone and includes passwordless authentication, SSO, adaptive access, help desk verification, and additional identity-related workflows. This makes RSA attractive for large organizations with complex authentication requirements, especially those modernizing workforce access across cloud and legacy environments. Its broader scope can be a major advantage for enterprises standardizing access controls across many systems, although it may be more than some companies need if their main goal is to deploy flexible MFA quickly and with lower complexity. Protectimus Protectimus offers clients a choice between a Cloud MFA Service and a Self-Hosted On-Premise MFA Platform. This flexibility suits both organizations that want a managed cloud service and companies that...