Катерина

KATERYNA MARTYNENKO
CYBERSECURITY PROFESSIONAL

EDUCATION ABOUT ME
Bachelor in cybersecurity(125) Cybersecurity professional specializing
Kyiv Taras Shevchenko in Open-Source Intelligence (OSINT) and
national univercity
Red Team penetration testing, with
2023-2027
strong expertise in large-scale data
Liceum №100 “Podil”
collection, analysis, and intelligence
(Honors math class)
graduated: 2023 synthesis. Experienced in working with
diverse open and closed sources,
CONTACTS transforming high-volume, unstructured
data into actionable insights for
[открыть контакты](см. выше в блоке «контактная информация»)
security, risk assessment, and threat
martynenkokateryna95@gm
ail.com
modeling.
TG:@Martynenkoo299
EXPERIENCE
LATEST ACHIEVMENTS 09.2025-01.2026 (part-time employed)
OSINT analyst for a private business -
A participant of the first
Provided OSINT-driven intelligence to
Ukrainian cybersecurity National
support business decision-making, risk
championships (finals, TOP 20).
management, and strategic planning.
TOP 30 RANKED in Ukraine. HTB TOP
Conducted comprehensive research across
2% (Seasonal)
open and restricted sources to identify
Holmes CTF: TOP 100 (out of
reputational, financial, operational,
7085).
and cyber risks related to companies,
CTF Tales From ELDORIA (HTB): TOP
partners, assets, and
100 (out of 8130).
markets.Specialized in large-scale data
Univercity CTF (HTB): TOP 55 (out
collection, correlation, and analysis,
of 1014).
transforming fragmented and high-volume
information into clear, actionable
reports for executives and security
teams. Delivered insights on
counterparty risk, due diligence, fraud
indicators, insider threats, data
exposure, and competitive intelligence.
 Over 2 years of hands-on experience
(2023-2025)
Conducted project-based OSINT
engagements, delivering intelligence
and analytical support for business,
security, and research use cases.