Multifactor authentication (MFA) is often considered one of the most effective ways to protect online accounts. However, recent reporting on attacks targeting accounting firms shows that cybercriminals continue looking for ways around the security controls businesses depend on, including protections designed to stop unauthorized access.

For many small businesses, the signal is not that MFA has lost its value. It is that cybersecurity works best when multiple protections support one another. Technologies such as MFA, email filtering, endpoint protection, and backups each serve a purpose, but attackers often focus on finding gaps between those layers rather than defeating a single control outright.