External Attack Surface Management
Traditional security guards the inside. Exposure intelligence looks at your company the way a stranger does, from the outside, using only what is already public.
- No Login
- No Software
- No Network Access
- Public Records Only
Read the way an outsider would, from records that are already public.
What External Attack Surface Management Means
External attack surface management is the continuous discovery of everything about your business that can be seen or reached from outside it, without permission and without access. Not what is on your servers. What the world can already read about you.
It is a different question from the one most security tools answer. Antivirus asks whether something bad is running on your machines. A firewall asks what is allowed through. External attack surface management asks a question neither of them can: if a stranger decided to study your company this morning, what would they find?
The Surface as an Outsider Sees It
Every name that resolves and every port that answers is part of the surface, including the ones nobody remembers standing up.
Why Traditional Security Tools Miss It
It Guards the Inside
Firewalls, antivirus, and endpoint tools protect the systems you own and control.
It Requires Installation
Most security products need software on a machine. That means nothing gets checked until someone buys, installs, and configures.
It Assumes You Know What You Own
A forgotten subdomain still resolves. An old portal still answers.
It Reports to Engineers
A vulnerability scanner produces output for someone who already understands it.
What Counts as Exposure
Exposure is not the same as vulnerability. A vulnerability is a flaw an attacker could use. An exposure is simply something visible, and visibility is what precedes almost every attack that starts from outside.
Email authentication settings are the clearest example. If your domain does not tell mail providers to reject forged messages, nothing has been hacked. There is no flaw to patch. The exposure is that anyone in the world can send mail that appears to come from your address, and they can discover that in one public lookup.
The Signals That Matter
Email Authentication
SPF, DKIM, and DMARC records determine whether a stranger can impersonate your address.
Certificate Transparency
Every certificate issued for your domain is logged publicly.
Credential Exposure
Addresses at your domain appear in breach corpora that are freely downloadable.
Lookalike Domains
A domain one character away from yours, with a live mail server configured, is not a theoretical risk.
Why It Is Measured Continuously
Why It Is Measured Continuously
Exposure is a moving target. A certificate that is valid today expires in ninety days. A breach corpus published next month may contain an address at your domain that was clean this morning. A subdomain spun up for a project in March is still answering in December. A single assessment tells you the state of things on one day. That is useful, and it is where everyone should start. But the value compounds when the same checks run continuously and you hear about the change rather than discovering it later.
External Attack Surface Management Tools
Most tools in this category were built for enterprises with security teams, and they are priced and scoped accordingly. They assume someone will configure them, triage their output, and act on it. A business with five to fifty employees needs the same signals with none of that overhead: run it against a domain, get a readable answer, and know what to do next. That is the gap Blindspot is built for, and it is why the scan requires no installation, no account, and no access to anything.
What Comes Back
Findings are ordered by what to handle first, with the consequence written in plain language rather than a severity number alone.
Questions About the Category
Blindspot is not a penetration test. A penetration test is an authorized attempt to break in, performed by people, usually costing thousands of dollars and scheduled once a year. Exposure intelligence is passive observation of public records, costs almost nothing, and can run continuously. They answer different questions and a serious security program eventually wants both.
External attack surface management is the outside-in half of it. Attack surface management as sold to enterprises also covers internal systems and requires access to them. Everything described here is measured from outside, with no access at all, which is what makes it possible to run on any business for free.
No, and neither does anyone else, which is the entire point. Every signal read here is already published. If reading it required permission, an attacker would need permission too, and they plainly do not.
See Your Own Exposure
Free, thirty seconds, no access to anything required.
We only read public records. We never touch your computers and we never ask for a password.
Keep Reading
Three places this leads next, depending on what you want to do about it.
- The ScanWhat Your Result Will Look LikeWhat you get from a free Blindspot scan: a grade, a prioritized list of findings, and the evidence behind each one. See what your result will look like before you run it.
- Deep DiveSecurity Posture ManagementSecurity posture is the measurable state of your defenses at a point in time. Here is what it means for a business with no security team, how it is measured from the outside, and how to improve it without buying enterprise software.
- ExplainerDark Web Scanning for BusinessA dark web scan checks whether addresses at your domain appear in breach and credential corpora. Here is what those scans actually search, what the results mean, and what to do when your business appears.