See everything.Miss nothing.
Every signal your product emits, on one timeline: logs, package installs, egress, syscalls, third-party vendors. Arcsec watches all of it, hunts your own attack surface the way an adversary would, and steps in the moment something moves.
- staging.arcsec.io · waf absent, basic-auth disabled
- ci-runner-04 · build hijack via docker.sock
- iam::deploy-bot · AdministratorAccess assumed
- rds::customer-db · 2.1M records readable
The attacker is nowa machine.
The costliest breaches of 2026 weren't a person at a keyboard. They were autonomous systems, patient enough to chain three small, overlooked mistakes into one catastrophic path, and fast enough to do it over a single weekend.
A malicious input on a data pipeline. A forgotten credential. A public config no one remembered. Defenses built for human-paced attacks cannot keep up with an adversary that never sleeps.
Enough time for an autonomous agent to reach full compromise while your team is offline.
Probes, pivots, and exploit attempts run in parallel: tireless, patient, and cheap.
Between traditional human pentests. The machines do not wait for the next quarter.
So we built a defender that works the same way the attacker does: autonomous, relentless, and always on.
Two instincts, one system.
Security tools look outward or inward. Arcsec does both, and each half sharpens the other: what Recon proves reachable is exactly what Watch guards hardest.
Thinks like the attacker
Black-box. From a single seed domain it maps everything reachable: subdomains, forgotten services, cloud assets, leaked secrets. Then it proves which paths are real by walking them end to end. No agents, no credentials, no assumptions. The same view an adversary starts from.
- seed
- arcsec.io
- expanded
- 13 entities · 12 edges
- proved
- 1 reachable chain
- disproved
- 4 candidate paths
One continuous loop,running while you sleep.
Map, validate, defend, then start again. It doesn't stop at a report. It closes the loop, and the loop never ends. One graph, three states, below.
Map everything an attacker can see
We build one dense graph of your real attack surface: domains, subdomains, forgotten services, cloud assets, leaked secrets, even a stray comment a founder left in public. Every entity, connected. Not a list. A map.
Prove which paths are actually reachable
A scanner tells you a door might be unlocked. Arcsec walks through it, safely running the exploit chain end to end to confirm what a real adversary could actually reach. Probes that come back negative are struck from the graph. You get evidence, not a wall of maybes.
Close the path, then keep watching
Every proven path is cut and every exposed entity contained. Then the graph keeps exploring. New deploy, new subdomain, new mistake: it re-maps and re-tests continuously, so the surface is never stale.
Everything yourproduct emits.
Your observability stack told you the system was slow. Nothing told you it was being walked through. Arcsec ingests the signals that actually carry an intrusion, and learns what normal looks like for each one.
Application & system logs
Every service on one timeline, parsed, correlated, and scored against your own baseline rather than a generic ruleset.
Package installs & lockfiles
A new dependency, a maintainer that changed hands, a post-install script that phones home. Supply-chain compromise surfaces here first.
Inbound & outbound IPs
Who reached your servers, and where your servers reached back. Egress to a destination you have never talked to is usually the tell.
Process & syscall activity
A shell spawned by a web worker. A binary written to /tmp and executed. The moves that always follow a foothold.
Third-party integrations
Every SaaS you have handed a token: analytics, monitoring, payments, CI. Their breach becomes your breach, so their surface is on your map.
Config & IAM drift
A role that gained AdministratorAccess at 2am. A bucket that turned public on a Friday deploy. Drift, not just state.
Credential use
Where each key lives, what legitimately uses it, and the first time it is ever used from somewhere new.
Build & deploy events
Every change to what is running, tied back to the attack surface it just altered.
- ■procsh spawned by node · pid 4417 · host web-02
- ■logdeploy 8f21c3a · api.arcsec.io · surface re-mapped
- ■pkgpost-install script added · @acme/telemetry@2.3.1
- ■netinbound 443 · 1.2k req/min · within baseline
- ■secretSTRIPE_KEY used from new asn · first occurrence
- ■cloudbucket assets-pub acl unchanged · verified
- ■pkglockfile changed · 3 transitive deps added · svc-billing
- ■netegress 10.4.2.71 → 34.117.0.0/16 · known · cdn
- ■iamrole deploy-bot policy widened · +s3:GetObject *
- ■logauth.login burst · 41 events · within baseline
- ■netegress ci-runner-04 → 91.219.x.x · never seen · 2.1MB
- ■depvendor token rotated · posthog · scheduled
illustrative · hover to pause
From patrol tocontainment, in steps.
Suspicion is cheap; certainty is expensive. Arcsec spends accordingly: a tireless patrol across everything, and a far more capable investigator that wakes only when the patrol finds something worth its time.
A cheap model that never blinks
A lightweight model sweeps every signal, all the time. It is not matching known-bad signatures; it is learning what normal looks like for your system, service by service, hour by hour.
- scope
- every source, every event
- model
- small · always resident
- output
- a baseline that stays current
Already finding real paths,
in real environments.
Arcsec is in private pilot. Every number below comes from live runs against production surfaces, not a lab, not a benchmark.
Large organisations running Arcsec against their live surface today.
Where Arcsec autonomously found and proved a genuine, reachable vulnerability.
Nothing to deploy, nothing to instrument. We start from the outside, like an attacker.
Every result arrives with the exact chain used to reach it. No severity guesswork.
pilot participants under nda · details available on a call
See your own attack surface,the way an attacker would.
We'll map a slice of your surface live and walk you through the paths we find. No agents to install, nothing to instrument, just the view you've been missing.