DEFION Security Email Formats

Computer and Network Security • EU, Netherlands • 51-100 Employees

DEFION Security Email Formats

DEFION Security uses 5 email formats. The most common is {first name}{last name} (e.g., johndoe@computest.nl), used 50% of the time.

Format	Example	Percentage
{first name}{last name}	johndoe@computest.nl	50%
{first initial}{last name}	jdoe@computest.nl	39.3%
{first initial}{second initial}{last name}	jodoe@computest.nl	3.6%
{f2}{second initial}{last name}	{f2}odoe@computest.nl	3.6%
{first name}	john@computest.nl	3.6%

Key Contacts at DEFION Security

Dennis De Hoog

Chief Technology Officer Eu

Hartger Ruijs

Chief Executive Officer

Menno Struik

Managing Director | Education & Research

Dave Smits

Business Unit Director Soc

Company overview

Headquarters	EU, Netherlands
Phone number	+31887331337
Websites	defion.security computest.nl
NAICS	518210
SIC	737
Keywords	Risk Management, Business Continuity, Threat Intelligence, CRA, Application Security, Digital Forensics, Cyber Security, Advisory, Information Security, Cyber Insurance, Siem, Vulnerability Management, Incident Response, Pentesting, Iso 27001, Iot Security, Vulnerability Research, Cloud Security, Red Teaming, Ot Security, MDR, Iec 62443, Purple Teaming, Dora, Nis2, Security Operations (Soc)
Founded	1997
Employees	51-100
Socials

About DEFION Security

DEFION Security is an independent, full-service cybersecurity specialist with offices in the Netherlands and Spain and a team of 100+ experts. From our Active Defense approach, we help our clients: • Reduce cyber risk exposure • Comply with complex cybersecurity regulations, like NIS2, DORA and CRA • Strengthen overall resilience and business continuity We connect prevention, detection, and response into one integrated security strategy – delivering not just technical expertise, but strategic advisory at the executive level. Our guidance enables leadership to align cybersecurity with business priorities and make informed investment decisions. Through DEFION Research Labs, we: • Discover new vulnerabilities • Dissect emerging threats • Collaborate with public partners and positively impact society This unique blend of frontline expertise and applied research ensures our clients are protected today and prepared for tomorrow. Learn more at defion.security

Employees by Management Level

Total employees: 51-100

Seniority

Employees

Entry

Manager

C-Suite

Employees by Department

DEFION Security has 21 employees across 7 departments.

Departments

Number of employees

Funding Data

DEFION Security has never raised funding before.

Frequently asked questions

DEFION Security is located in EU, NL.

You can reach DEFION Security at +31887331337.

DEFION Security was founded in 1997, making it 29 years old. The company has established itself as a significant player in its industry over this time.

DEFION Security has approximately 51-100 employees. The company continues to grow its workforce to support its business operations and expansion.