DefZero

defzero.net

South Holland, Netherlands

1-10 employees

LinkedIn Profile

About DefZero

technical security assessment & cyber security trainings, it services & it consulting, security community support, services, ai model security, security automation tools, secure file sharing, security services, security assessment, threat simulation, secure file sharing platform, b2b, network security, ai large language model security, vulnerability assessment tools, software development, domain osint analysis, threat detection, cybersecurity community support, security incident response

DefZero's Tech Stack

Decision Makers at DefZero

1 contact

Usman Saeed

Founder | CEO | Principal Security Advisor

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16 technologies detected · 1 decision maker · Emails available

Sales Outreach Angle

WordPress as a CMS signals a content-driven or SMB digital presence. SEO tools, hosting solutions, and page-builder plugins are natural fits for outreach.

DefZero's Position in the StackWho Database

• DefZero is 1 of 194,140 information technology & services companies tracked in StackWho.
• 193,618 information technology & services companies in our database have verified decision-maker emails (100% of the cohort).
• 2,034 companies in South Holland are in the StackWho database.
• 97,391 information technology & services companies are in the 1-10 employee range (same size as DefZero).

Technology detection from public web signals. Decision-maker contacts compiled from LinkedIn public profiles, company filings, and verified outbound testing. Methodology & sources · Updated August 2026.

Frequently Asked Questions

What technology does DefZero use?

DefZero uses Cloudflare DNS, Outlook, Microsoft Office 365, CloudFlare Hosting, Amazon AWS, Gmail, and 10 more technologies. This data is sourced from StackWho's technology detection engine.

How do I contact the decision makers at DefZero?

StackWho has verified email addresses for 1 decision maker at DefZero. Pro members can access direct emails for the CEO, CTO, VP of Engineering, and other key contacts. Use StackWho to reach DefZero directly for sales, recruiting, or partnerships.

What industry is DefZero in?

DefZero operates in the information technology & services industry, headquartered in South Holland, Netherlands. StackWho tracks technology stacks and decision maker contacts for companies across all industries.

Can I export DefZero's contact data?

Yes. StackWho Pro members can export decision maker contact data for DefZero and similar companies to CSV. Use the export feature to build targeted prospect lists segmented by technology stack, industry, or location.