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Learning prompt injection by attacking a deliberately vulnerable AI
Prompt injection is the security problem that defines LLM applications, and I kept running into the …
Beyond Login: Building a Production Authentication Lifecycle in FastAPI
Authentication is often presented as a short sequence: Accept a username and password. Return a JW…
Docker bypassed my firewall: the database port was open to the internet
I had a firewall. I had explicitly blocked the Postgres port on the host. And Postgres was still rea…
How Permissionless Pyth Lazer Calls Could Drain 0xMarkets’ Oracle Fee Balance and Break Price Updates
Oracle integrations often look like read-only infrastructure. This one was not. Inside 0xMarkets, …
The One Question Every Business Owner Must Ask Before Using AI Agents
You've seen the headlines. An AI agent, given too much freedom, deletes a production database. A cha…
When One Keycloak Node Is a Single Point of Failure: A Keycloak Cluster Nginx Threat Model for Zero-Downtime Upgrades
The exposure We ran Keycloak the way most teams start: one node, one VM, "we'll cluster it later."…
Local Kubernetes Dev — Part 6: Containerizing your service — writing a Dockerfile
Two mistakes beginners make in Dockerfiles constantly — and both have real consequences: running as …
Beyond Simple Applets: Event Correlation, Tcl, and a Complete Real-World EEM Build
This is the finale of a 5-part series on Cisco EEM. Part 1 built the model; Part 2 healed; Part 3 ca…
Add Face Liveness Detection to Any App in 10 Lines of Code (Free Tier Available)
Most biometric verification tools are either expensive, require a hardware SDK, or lock you into a p…
How I Built an Enterprise Biometric API From a $0 Budget and an Android Phone
I don't own a laptop. I don't have a funded startup. I'm a self-taught developer from Nigeria, and s…
The audit confirmed the generator existed. It did — and it was never called
Since 30 July, roughly 2,000 BTC — about $130 million at current prices — has been drained out of Co…
Secure Avionics Architecture and Network Segmentation Design Patterns
Why 'secure-by-design' must be the base assumption How to partition mixed-criticality avionics witho…