Sixty percent of Australian data breaches begin with a single stolen password. Not a sophisticated zero-day. Not a nation-state exploit. Just someone's reused LinkedIn password, phished on a Tuesday afternoon. The fix is not complicated. It is not expensive. And you can deploy most of it by Friday.

Here is exactly what to do.

Step One: Deploy Phishing-Resistant MFA (Day 1-2)

SMS codes and authenticator app push notifications are not enough. Attackers bypass both with off-the-shelf phishing kits that cost $300 on dark web forums. The ASD Essential Eight MFA maturity level three requires phishing-resistant factors. That means FIDO2 security keys or platform biometrics tied to hardware.

What to buy: YubiKey 5 Series. $55 per key. Give every employee two (one primary, one backup in a drawer). Total: $110 per user, one-time cost.

Setup path by platform:

• Microsoft 365 / Entra ID: Entra admin center, Security, Authentication methods, enable FIDO2. Takes 20 minutes. Registration campaign pushes users to enrol next login.
• Google Workspace: Admin console, Security, 2-Step Verification, allow security keys. Users add keys at myaccount.google.com/security.
• Self-hosted option: Authentik (open source). Docker deploy on an internal VM. Full FIDO2/WebAuthn support. Zero recurring licence cost. Good for companies running their own infrastructure.

The policy: Disable SMS and app-based MFA. Require FIDO2 for all privileged accounts (IT, finance, executives) immediately. Roll out to all users within 14 days. No exceptions for contractors. No exceptions for the CEO. Attackers do not check job titles before they phish.

Step Two: Deploy Single Sign-On (Day 2-3)

Every password an employee manages manually is a phishing surface. SSO collapses 47 passwords into one, secured by your MFA policy. One identity provider. One enforcement point.

SMB options with real pricing:

• Microsoft Entra ID P1: $9.40 per user per month. Includes SSO, conditional access, MFA registration campaign. Bundled with most Microsoft 365 Business Premium plans.
• Okta Workforce Identity: $3 per user per month (SSO-only tier). Full identity governance at $9 per user per month. Better third-party app catalogue than Microsoft.
• Google Workspace SSO: Included with Business Standard ($18.40 per user per month). Works well if Google is already your primary productivity suite.

Deployment order matters:

1. Connect your email platform first. That is where password resets go.
2. Add your CRM, payroll, and accounting tools. These hold sensitive data.
3. Connect HR, project management, and document storage.
4. Block direct logins to all SaaS apps once SSO is live. If an app offers SAML or OIDC, use it.

One Melbourne accounting firm we worked with deployed Okta SSO across 14 apps in three days. Day four they blocked all direct logins. Phishing surface: reduced from 14 credentials per user to one.

Step Three: IAM Cleanup and Dormant Account Audit (Day 3-4)

The average SMB has 24% more active user accounts than actual employees. Former staff. Test accounts. Third-party vendor access that was never revoked. Contractors who finished six months ago.

Run this audit now:

• Export all user accounts from your identity provider (Entra ID, Google Workspace, Okta).
• Cross-reference against current payroll or HR records.
• Flag any account with no login activity in 30 days. Disable it.
• Flag any account with no login activity in 90 days. Delete it.
• Check service accounts and API keys. Rotate any key older than 12 months.
• Review third-party access. Rescope to least privilege.

CIS Controls v8 IG1 requires:

• Quarterly access reviews (CIS Control 5.4)
• Revoking access within 24 hours of termination (CIS Control 5.2)
• Disabling dormant accounts after 45 days (CIS Control 5.3)

A Melbourne healthcare client found an active admin account for a sysadmin who left in 2021. Still had global administrator in Microsoft 365. Still had the same password. Three years of exposure. The audit took two hours.

Password policy enforcement:

• Minimum 14 characters. No complexity rules (NIST SP 800-63-3 dropped those in 2017).
• Check passwords against Have I Been Pwned's Pwned Passwords API. Block compromised passwords at creation.
• No mandatory rotation unless compromise is suspected. Forced rotation creates predictable patterns.
• Deploy a password manager: 1Password Teams ($7.99 per user per month) or Bitwarden Teams ($4 per user per month). Bitwarden is cheaper and open source. 1Password has better user experience and travel mode.

Step Four: Zero Trust Identity Verification (Day 4-5)

Traditional security trusts anyone inside the network. Zero trust trusts no one, verifies everything, every session.

What you can implement this week:

• Conditional access policies: Block logins from outside Australia. Require compliant device for sensitive apps. Block legacy authentication protocols (POP3, IMAP, SMTP auth). Attackers love legacy auth because it bypasses MFA entirely.
• Session lifetime limits: Set maximum session to 12 hours. Force reauthentication for sensitive operations (changing MFA methods, adding new devices, accessing billing).
• Device trust: Require devices to be enrolled in MDM or at minimum meet a compliance baseline (disk encryption on, OS patched, screen lock enabled). Entra ID conditional access can enforce this with a single policy.
• Just-in-time access: For privileged operations, grant access when needed then revoke automatically after. No standing admin privileges.

The NIST SP 800-63-3 framework underpins all of this. AAL2 requires two distinct authentication factors with approved cryptography. AAL3 requires hardware-based authenticators with verifier impersonation resistance. For most SMBs, AAL2 with FIDO2 security keys is the practical target. AAL3 adds cost and friction with limited additional protection for standard business use cases.

FAQ

Conclusion

Identity is the perimeter now. Your office walls do not matter. Your VPN does not matter. The only thing standing between an attacker and your data is whether your authentication holds. Phishing-resistant MFA, SSO, account hygiene, and conditional access are not enterprise luxuries. They are table stakes for any business holding customer data, financial records, or intellectual property.

Start with the dormant account audit today. It takes two hours, costs nothing, and will probably find something alarming. Then roll through the rest of the checklist this week.

Need help building an identity security roadmap that fits your budget and compliance requirements? Visit consult.lil.business for a free cybersecurity assessment. We map your current posture against the ASD Essential Eight, NIST SP 800-63-3, and CIS Controls v8, then give you a prioritised action plan you can start executing immediately.

References

1. ASD Essential Eight Maturity Model
2. NIST SP 800-63-3 Digital Identity Guidelines
3. CIS Controls v8 Implementation Groups
4. Microsoft Entra ID Conditional Access Documentation
5. YubiKey Enterprise Deployment Guide

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