Herdy Rostel Youlou
Cybersecurity for a safer Africa
Securing systems today for a trusted digital tomorrow.
I help companies and organizations protect their systems, detect threats, and put in place cybersecurity solutions suited to African realities.
- Wireshark
- Metasploit
- Burp Suite
- Nessus
FLAGSHIP PROJECT · Open source SOC Lab
RSankofa
A SOC analyst in West Africa often ends up with logs but no tool to analyze them. Commercial SIEMs cost between $5,000 and $50,000 a year, out of reach for most local IT teams and SMBs.
- 4
Log formats analyzed
- 8
MITRE ATT&CK campaigns
- 5
IoC types extracted
- 3
Report formats
STACK
- Python
- FastAPI
- React
- TypeScript
- Vite
- Docker Compose
PROJECT · SaaS · Human Cybersecurity
RoxShield
The human factor remains the leading cause of security incidents in organizations: phishing, weak passwords, lack of awareness.
Selected into the inaugural Cyber4Africa cohort (UNDP/G7/Cisco), among 430 applications from 18 countries.
- 14
Organizations trialing the platform
- 7
Countries represented
- 3
Strict access tiers
- 2
Scoring signals
STACK
- Next.js 14
- NestJS
- Prisma
- PostgreSQL
OPERATIONAL SECURITY
Beyond the projects, the practice.
Security Practice, Rostel High-Tech
Regular security audits (HTTP headers, SSL/TLS, DNS), Cloudflare migration and configuration, HTTP hardening, monthly monitoring of client infrastructure.
elladarie.com Audit
Security audit conducted in September 2026 for El Design (Sylvain Itoua). Gaps identified in security headers, since remediated.
WordPress Security, AgriSen HUB
WordPress platform hardening, update and access management to reduce the attack surface.
SERVICES
Areas of expertise
System security
Audit, hardening, and best practices
Monitoring & detection
SOC, risk analysis, and threat detection
Networks & infrastructure
Secure administration and access management
Advisory & support
Strategy, awareness, and compliance
PROCESS
How I work
- 01
Scoping
Understand your context, your stakes and the scope of the engagement before any intervention.
- 02
Assessment
Take stock of the systems, access and configurations in place to spot what is exposed.
- 03
Analysis
Analyze vulnerabilities and risks, then prioritize them by real impact.
- 04
Remediation
Propose concrete actions, then support their implementation: hardening, configuration, fixes.
- 05
Follow-up
Monitor over time, check that the fixes hold and raise awareness among teams.
AT A GLANCE
A practice built in the field.
- certifications earned, from Red Team to ISO 27001
- selection into the inaugural Cyber4Africa cohort, among 430 applications
- open source tool published and maintained, MIT licensed
- organizations currently on the RoxShield platform