Hello, I’m
Ethical hacker &
offensive security engineer // zer0day
I’m Adrian Kade (zer0day) — an ethical hacker who breaks into banks, hospitals, and critical infrastructure before criminals do, then hardens every door I walk through.
Available worldwide · Berlin, DE
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Available for engagements
Whoami
I’m Adrian Kade — a former CTF champion turned offensive security engineer. For over a decade I’ve been paid to think like the adversary: mapping attack surfaces, chaining exploits, and slipping past defenses that were “unbreakable” on paper.
Then I flip the script — translating every finding into airtight, prioritized defense. I’ve hardened banks, hospitals, and critical infrastructure against ransomware, phishing, zero-days, insider threats, and AI-driven attacks. Not one system under my watch has been breached.
What we do
Six disciplines, one operator mindset. From first recon to hardened remediation — nothing gets handed off and lost.
Web, network, mobile, and API assessments that find the holes scanners miss — with proof-of-concept exploits.
Explore →Zero-trust architecture and posture hardening across AWS, Azure, GCP, and Kubernetes — identities, workloads, data.
Explore →Static and dynamic reverse engineering in Ghidra and IDA to dissect payloads, extract IOCs, and decode intent.
Explore →Proactive detection of adversaries already inside — hunting living-off-the-land techniques and dormant footholds.
Explore →Full-scope adversary simulation — phishing, physical, and digital — testing whether people, process, and tech hold.
Explore →When it’s already on fire: rapid containment, forensic root-cause analysis, and clean-state recovery with audit trail.
Explore →Why choose us
You’re not hiring a checklist — you’re hiring an adversary who’s on your side, and who’s done this 500+ times.
Our track record so far: 500+ penetration tests, 40+ CVEs disclosed, 12+ years in offensive security — and 0 breaches on watch.
We don’t test to a template. We improvise, chain, and pivot exactly like a real threat actor — because we’ve studied thousands of them.
500+ engagements across finance, healthcare, and government — including Fortune 500 estates and nation-state-grade threats.
Every organization under our active protection has stayed breach-free. That’s not luck — it’s relentless, adversarial diligence.
No 200-page PDF dumps. Prioritized findings your engineers can fix this sprint, and an exec summary your board can actually read.
Selected engagements
A selection of engagements where we turned a potential headline into a non-event. Names used with permission.
Red Team · Aegis Bank · 2025
A poisoned software update slipped past legacy tooling. Our detection engine flagged the anomalous outbound traffic instantly, isolated the affected hosts, and rolled back the change before a single account was touched.
Pentest · Orbital · 2024
A global fleet with no unified identity layer. We rolled out autonomous EDR and micro-segmentation to every device and site, cutting the attack surface by 96% without a single hour of downtime.
Hardening · Verdant · 2024
Connected medical devices made every site a target. We deployed continuous monitoring and immutable backups across the network — a subsequent ransomware attempt was detected and contained before encryption began.
The arsenal
Battle-tested across hundreds of engagements. We reach for the right tool — and write our own when nothing off-the-shelf does the job.
How we work
A disciplined methodology that mirrors a real attacker’s kill chain — then closes every door we walked through.
01 · Recon
OSINT, asset discovery, and enumeration to see your environment exactly as an attacker would — including the shadow IT you forgot about.
02 · Exploit
Chain vulnerabilities into working exploits — no theoretical findings, only demonstrated impact you can see and understand.
03 · Escalate
Pivot deeper, escalate privileges, and reach the crown jewels — quantifying exactly what a breach would cost you.
04 · Report
Every finding ranked by real-world risk, with reproduction steps and fixes your engineers can action immediately.
05 · Harden
We come back to confirm every fix holds under the same attack — so the door stays closed for good.
From the front lines
“Ironvale found a supply-chain intrusion our previous vendor missed for weeks — and contained it in under a minute. They’re the difference between a headline and a non-event.”
Dana ReyesCISO, Aegis Bank “They think three moves ahead of any attacker we’ve faced. Our detection got faster and my team got their weekends back.”
Marcus HaleVP Security, Orbital “The clearest security report I’ve read in 20 years. My board finally understood our risk — and signed off on the budget.”
Sofia LundCTO, Verdant Health Let’s work together
Currently available for penetration tests, red-team engagements, and fractional CISO work. Let’s find your gaps before someone else does.