Dark web monitoring services continuously scan criminal forums, marketplaces, and paste sites for credentials, personal information, and corporate data associated with your organisation. When a match is found, they alert you. The services range from free basic tools to enterprise-grade threat intelligence platforms.
What It Can Tell You
That credentials associated with your domain have appeared in a known breach dataset. That email addresses from your organisation are being sold on criminal forums. That data resembling your client records has appeared on a criminal marketplace. This intelligence is actionable: change affected credentials immediately, investigate whether the source breach was your own systems or a third-party site, and assess whether notification obligations are triggered.
What It Cannot Tell You
It cannot tell you about credentials sold through private channels that do not appear on indexed criminal forums. It cannot tell you about targeted attacks that have not yet resulted in data appearing publicly. It cannot prevent the breach that puts your data on the dark web in the first place. It is a detection and response input, not a prevention control.
How to Use It Effectively
Treat dark web monitoring alerts as a trigger for credential reset and investigation — not as evidence that a breach has or has not occurred. A clean dark web monitoring result does not mean you have not been compromised. Combine dark web monitoring with Entra ID Protection risk signals, security logging, and regular penetration testing for a more complete picture.
Which dark web monitoring service should we use?
For most Australian small businesses, the dark web monitoring included in Microsoft 365 Defender (for credential alerts) and Entra ID Protection (for sign-in risk signals) provides meaningful coverage at no additional cost. Dedicated services like Recorded Future, Digital Shadows, or KELA provide broader coverage for organisations with more complex threat intelligence needs.
