24/7 incident line · +1 (888) 978-1222
Senior-led · defense + offense

The operators you call
when it's already inside.

Incident response, ransomware negotiation, and offensive security from senior hands who've done the work under fire. Evidence-first, honest about what we know, and building the tools we fight with.

24/7 Incident Response
Ransomware Negotiation
Cloud & Endpoint Forensics
Active Directory & Entra
Offensive Security
In-house Tooling
The thesis

Most security fails quietly — a false all-clear, a report nobody reads, a bench of juniors learning on your incident. We built Slash Zero to be the opposite: senior operators who tell you the truth about what's happening, preserve the evidence, and stay on the keyboard until it's resolved.

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Capabilities

Full-spectrum security operations

From the worst day of your year to the assessment that stops it happening. One senior team, across defense and offense.

Respond — when it's already happening
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Incident Response

When something's already inside, the clock is the enemy. We contain the threat, reconstruct exactly what happened, and get you operating again — with evidence preserved and defensible for legal, insurance, and regulators.

ContainmentForensicsRoot cause
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Ransomware Negotiation

A calm, experienced hand on the other side of the chat. We profile the actor, manage communications, buy your recovery team time, and advise the decision — sanctions-aware and grounded in what actually gets data back.

Actor profilingOFAC-awareRecovery
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Cloud Investigations

AWS, Azure, GCP, M365, Workspace. We follow the identity and the API trail through control-plane logs to establish access, persistence, and exfiltration — in environments where there's no disk to image.

M365CloudTrailIdentity
Assess & attack — before someone else does
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Vulnerability Assessment

Find what's exploitable before someone else does. Authenticated and unauthenticated assessment across external, internal, and cloud surfaces — prioritized by real attack paths, not a raw scanner dump.

ExternalInternalCloud
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Offensive Security

Adversary emulation and full-scope penetration testing. We operate the way real intrusion sets do, then translate findings into detections and hardening your defenders can actually act on.

PentestEmulationPurple
Sectors

Where a breach is existential

We work in regulated, high-stakes, evidence-sensitive environments — where getting the response right is the difference between an incident and a catastrophe.

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Financial Services

Banks, funds, fintech, and insurers — where downtime and data loss are measured in regulatory exposure.

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Healthcare & Life Sciences

Providers, payers, and research — protected data, uptime-critical systems, and unforgiving compliance.

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Legal & Professional Services

Firms holding privileged, high-value data — where confidentiality and chain-of-custody are the product.

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Technology & SaaS

Platforms whose own customers depend on their security — breaches that cascade downstream fast.

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Critical Infrastructure

Utilities, manufacturing, and OT — where an IT compromise can reach physical, safety-critical systems.

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Public Sector

Agencies and their contractors — targeted, scrutinized, and held to the highest evidentiary standard.

Approach

Principles that hold under pressure

How we handle your worst day — and everything before it.

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Evidence first

Every action is defensible. We preserve, document, and reconstruct so findings hold up for counsel, carriers, and regulators.

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Honest over convenient

No fabricated verdicts, no theater. If the answer is "we don't know yet," you'll hear that — and what we're doing to find out.

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Senior on the keyboard

The operator scoping your engagement is the operator running it. No handoff to a rotating bench of juniors.

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Findings you can act on

Not a raw scanner dump. Prioritized attack paths, real fixes, and detections your team can deploy the same week.

Who we are

Built by operators,
not a sales bench.

Slash Zero Security is a boutique cybersecurity firm. When you engage us, you work directly with the person doing the work — someone who has run real incidents, negotiated with real threat actors, and sat in the room when a business had to decide what to do next.

The name is the ethic. Slash zero — cut the noise, keep the signal. We'd rather tell you plainly that we don't know something yet than hand you a false all-clear. In our world, an honest UNANALYZED beats a comfortable, wrong CLEAN every time.

We also build the tools we fight with — including SZIN, our malware-analysis and threat-intelligence platform, and Anomalocaris, our DFIR collection agent. Our tradecraft isn't rented from a vendor stack; it's ours, and it sharpens with every engagement.

Why teams call us
SENIOR
One operator, start to finish. The person who scopes it runs it — no junior bench.
BOTH SIDES
Defense and offense. We respond to intrusions and we run them, so each informs the other.
TOOLING
In-house platform. SZIN and Anomalocaris — our own threat-intel and DFIR stack.
EVIDENCE
Defensible by default. Findings built to hold up for counsel, carriers, and regulators.
Get in touch

Under attack right now? Reach us first.

If you're mid-incident, don't fill out a form. Use the incident line — we triage active engagements ahead of everything else.