Alexandru Dinu-Senior Security Researcher
Check rate
Experience
Senior Security Researcher
Secureworks (Sophos)
- Performed malware analysis and engineered EDR countermeasures, including YARA signatures and memory-based techniques, to mitigate advanced threats.
- Developed detections across multiple telemetry sources such as process execution, network traffic, authentication events, and script activity, enabling rapid identification of malicious behaviors and persistence mechanisms.
- Leveraged AI techniques to research and automate the development of detection rules and used Jupyter notebooks to query large datasets, identify patterns, generate statistical insights, and correlate anomalies across tenants.
- Conducted threat hunting across endpoint and network environments, supported incident response teams, contributed to CERT initiatives, and collaborated with data science efforts to investigate persistence techniques, ransomware detection, and command-and-control identification.
Senior Security Analyst
Adobe
- Led incident response and triage for enterprise-level security events, analyzing cloud provider logs, OS configurations, and network flows to detect risks.
- Investigated suspicious activity in SIEM platforms, authored detection rules, and performed forensic analysis of memory, logs, and malware samples.
- Conducted APT hunting, evaluated and deployed security tools, and partnered with engineering teams to onboard and monitor specialized environments.
Team Leader & Virus Researcher
Avira
- Started as a virus researcher and then directed a malware support team while providing Level 3 technical expertise, leading quality assurance efforts, and overseeing the virus definition update process.
- Conducted malware research and reverse engineering, producing threat descriptions, analyzing rootkits, and testing obfuscation and encryption techniques.
- Delivered technical content, collaborated across departments, and utilized tools such as IDA Pro, OllyDBG, Wireshark, Fiddler, and Volatility to analyze malware behavior and network traffic.
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology and Media and Entertainment.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Product Development, Research and Development, Information Technology, and Quality Assurance.
Summary
Cybersecurity Professional with 19 years of experience in threat detection, incident response, malware analysis and phishing research. Skilled in leveraging AI/ML for anomaly detection, conducting threat hunting and leveraging threat intelligence to strengthen defenses. Proficient in Python, Jupyter Notebooks, AWS, SIEM, EDR, YARA, and Splunk, with experience collaborating with data science/engineering teams to refine detection models and automate security workflows. Developed a growing passion for email security.
Skills
- Threat Detection & Response
- Malware Analysis
- Siem, Edr & Yara
- Email Security Research
- Ai-Assisted Detection Engineering
- Threat Hunting & Ti
- Python & Pandas
- Virtualization
- Cloud Security
Languages
Education
Polytechnic University of Bucharest
MSc in Intelligent Leading Systems · Intelligent Leading Systems · Bucharest, Romania
Polytechnic University of Bucharest
BEng in Computer Engineering, Automatic Control · Computer Engineering, Automatic Control · Bucharest, Romania
Certifications & licenses
GPYC – GIAC Python Coder
GIAC
GPEN – GIAC Penetration Tester
GIAC
GREM – GIAC Reverse Engineering Malware
GIAC
Avira
Statistics
Experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Alexandru is based in Bucharest, Romania.
Alexandru speaks the following languages: Romanian (Native), English (Advanced).
Alexandru has at least 20 years of experience. During this time, Alexandru has worked in at least 3 different roles and for 3 different companies. The average length of individual experience is 7 years and 6 months. Note that Alexandru may not have shared all experience and actually has more experience.
Based on recent experience, Alexandru would be well-suited for roles such as: Senior Security Researcher, Senior Security Analyst, Team Leader & Virus Researcher.
Alexandru's most recent position is Senior Security Researcher at Secureworks (Sophos).
In recent years, Alexandru has worked for Secureworks (Sophos).
Alexandru is most experienced in industries like Information Technology and Media and Entertainment.
Alexandru is most experienced in business areas like Product Development, Research and Development, and Information Technology. Alexandru also has some experience in Quality Assurance.
Alexandru has recently worked in industries like Information Technology.
Alexandru has recently worked in business areas like Information Technology, Product Development, and Research and Development.
Alexandru holds a Master in Intelligent Leading Systems from Polytechnic University of Bucharest and a Bachelor in Computer Engineering, Automatic Control from Polytechnic University of Bucharest.
Alexandru has 4 certificates. Among them, these include: GPYC – GIAC Python Coder, GPEN – GIAC Penetration Tester, and GREM – GIAC Reverse Engineering Malware.
The availability of Alexandru needs to be confirmed.
Daily rate distribution
The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.
Average rates for similar positions
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 25 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
Similar freelancers
Discover other experts with similar qualifications and experience
Stefan Radushev
Niels Aerts
Kennedy Aikohi
Vlad Vasiliu
Ovidiu Daniel Juncanariu
Gilbert Lintner
Christian Decker
Maxim Anikeev
Alexandru Ardelean
Sorin Delcea
Experts recently working on similar projects
Freelancers with hands-on experience in comparable project as a Senior Security Researcher
Rares Nedelcu
Monika Müller
Luka Andghuladze
Benjamin Wheatland
Mike Barthel
Petr Pospíšil
Pierre Gronau
Seyed farhad Miri
Ilayda Dede
Valeri Milke
Nearby freelancers
Professionals working in or nearby Bucharest, Romania
Ionut Baranga
Stefan Chiorescu
Robert Pavel
Natalia Ticu
Sebastian Dracopol
Alexandru Stanescu
Bogdan Armencea
Razvan Coca
Danut Fenea
Bogdan Neacsu
