Multi-Factor Authentication (MFA) for SVN stops that. It demands proof beyond a single password, forcing every commit or checkout to pass two or more verification steps. For Subversion repositories, MFA closes the gap left by static credentials. Even if a username and password leak, attackers cannot move without the second factor.
Implementing MFA in SVN is direct. Start with a server-side authentication layer that supports MFA protocols. Pair it with your existing Apache or svnserve configuration. For HTTPS access, use mod_auth to tie the repository to an MFA provider. For SSH access, add a PAM module that forces token-based verification along with your SSH key. This way, every operation—checkout, commit, tag—requires a valid session from both factors.
Integrating MFA into SVN workflows demands balance. Developers need speed, admins need control. Use single sign-on where possible, but enforce token renewal at least once per day. Combine MFA with fine-grained authorization in svnserve.conf or Apache authz files. Lock sensitive branches by account role, then require MFA for any write access.