Drop recon traffic early. Let real users through.
Reconnaissance is the warm up lap for attacks. It maps your environment, finds what is exposed, and tells adversaries where to spend time. SignalShadow reduces attack surface by identifying and dropping recon traffic before it turns into exploitation, investigations, and noise.
We do not rely on simple IP deny lists. We look for signals that indicate reconnaissance behavior so legitimate traffic can keep moving while automation gets cut off. Then we use your own telemetry to get sharper over time and reflect what matters in your environment.
Attackers start with discovery
Scanning and probing reveal what is exposed. Once an attacker has a map, exploits are not far behind.
Blocking by IP is a blunt tool
Shared infrastructure and fast rotation make IP blocks fragile. Over blocking creates collateral damage and under blocking leaves gaps.
Recon creates downstream cost
More recon means more alerts, more pivots, and more time wasted. Reducing inbound junk improves every security workflow.
How it works
Classify behavior, not addresses
We focus on signals that separate real user traffic from reconnaissance automation. That keeps normal access working and drops the traffic that is only there to learn and probe.
Reduce surface area at the boundary
Stopping recon early removes common paths attackers use to inventory your stack. Less discovery means fewer opportunities to exploit.
Make decisions reviewable
Security teams need to understand why something was dropped. The system is designed for clear reasoning and simple tuning.
Improve with your own data
Every environment is different. We use your telemetry to improve precision and focus on what actually matters to your infrastructure and your risk.
What you get
- Less reconnaissance hitting your perimeter and less exposure for attackers to learn from.
- Fewer false blocks because decisions are driven by behavior signals rather than static lists.
- Cleaner security operations with less inbound junk feeding alerts and investigations.
- A feedback loop where your own data steadily improves precision.
Why now
Exposure is growing
APIs, SaaS, and cloud workloads keep expanding the public edge. Attackers probe those edges continuously.
Recon is cheap and constant
Automation makes discovery effortless. That creates a steady stream of low value traffic that still consumes attention and tooling.
Teams need leverage
The fastest way to improve security operations is to reduce what enters the pipe. Less noise makes everything downstream faster.
Stealth for now
Who we want to talk to
Teams that care about reducing attack surface and keeping operations sane. If reconnaissance traffic is a constant background problem, we should talk.
Send a short note with your environment and what success looks like. We will respond quickly.
Contact
Email Nick to get the conversation started.
- Email: hello@signalshadow.net
- Built in Boston
- Status: Building with a small group of early partners