SubZeroSec is an offensive security firm. We intercept vulnerabilities on the path to becoming zero-days - through VAPT, red teaming, threat hunting, OSINT and attack surface analysis - so a breach never happens.
From manual penetration testing to intelligence-led red teaming, we partner with your team across the security lifecycle - identifying risk, validating controls, supporting remediation, and proving every fix holds.
Manual, exploit-driven engagements run by operators who compromise systems for a living - across web, API, network, cloud, and your people.
Manual, exploit-driven testing - not a scan with a logo.
Objective-based adversary emulation against your live defenses.
Hypothesis-driven hunting for adversaries already inside.
Everything an adversary can learn about you for free.
A continuously accurate map of everything you expose.
Identify exploitable vulnerabilities before attackers do.
Simulate real adversaries to test resilience.
Proactively uncover hidden threats.
Discover exposed assets and intelligence leaks.
Understand what attackers see.
From banks to telecoms, leaders rely on SubZeroSec to show them exactly how an attacker would get in - and to prove the fix.
“They showed us exactly how an attacker would move through us, then stayed until our team could see it happening. That changed how we think about detection.”
“We thought we understood our network. The assessment showed us we didn't, and gave us a plan we could actually execute.”
The dangerous part of an unknown asset is not that it is vulnerable. It is that no one is watching it long enough to notice when it becomes a problem.
They are not the same service at different price points. They answer different questions, and buying the wrong one wastes a real opportunity.
Attackers are rational actors with budgets. Understanding their cost model tells you which defenses actually change their behavior.
Book a scoped assessment - we will map what is reachable, prove what is exploitable, and give you a ranked path to closing it before someone finds it first.
Book a free scoping call
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