What it checks
Accounts with an empty password in /etc/shadow.
Why it matters
An unauthenticated login path.
How to fix
Lock (passwd -l) or set a strong password.
InfraGuard runs all 36 checks across your servers at once and grades each host A–F.
Track these versions on your own servers
InfraGuard collects installed software versions from every server and flags the ones with known vulnerabilities. Self-hosted — nothing leaves your network.