joelcedras.dev

I find security holes in South African systems.

Then I write about them. I study computer science at Stellenbosch University, I’ve done three security and fraud internships at Capitec, and I build software and report for GroundUp News. So far that’s meant SASSA’s grant system, government websites, a R511-million scam and, most recently, Gauteng’s panic app.

Watches the logs · poke it
18 GroundUp bylines
5,000+ Security flaws in SITA’s services
R511m Lost in the Morita Forestry scam
Top 200 M&G Young South Africans, 2025
Latest

Gauteng’s panic app left crime reports open

The database behind the province’s e-Panic Button app wasn’t secured. Anyone who knew where to look could see crime reports, including reports of domestic violence and assault, along with the names, phone numbers, locations and movement histories of the people who filed them.

What I do

Three kinds of work

They overlap more than you’d think, often in the same week.

Security researcher

At Capitec I’ve worked across red, blue and purple teams: internal penetration testing, breaking out of endpoints, moving across the network, and testing APIs with Burp Suite and Postman. I found and reported two internal vulnerabilities.

Investigative reporter

I write for GroundUp News about fraud, data breaches, RICA compliance and government IT. The SASSA grant investigation made national news and was taken up by Parliament.

Developer & sysadmin

Django, Python, Linux, Nginx, Cloudflare, Azure, Microsoft 365 and Google Workspace. I’ve built newsroom features, moved whole organisations onto new systems, and traced a denial-of-service attack back to its source.

Selected work

Three stories that made an impact

All 18 articles →

Recognition

Awards & honours

Mail & Guardian Top 200 Young South AfricansEditor’s Choice · 2025
DRD Special Recognition AwardEthical leadership and bravery
SA Reserve Bank MPC Schools ChallengeTeam Governor · Finalist
Stellenbosch University1st year Cum Laude
Elsewhere

Press about the work

MyBroadband
“The huge security flaw exposed in South Africa’s financial systems”
Stellenbosch University
Profile on the SASSA grant fraud findings
Mail & Guardian
Top 200 Young South Africans, Editor’s Choice
Available for

Talks and consulting

Found something broken?

Tip-offs, vulnerability reports, job offers, or a website that needs building. Email is the quickest way to reach me.

joel@joelcedras.dev