Cybersecurity Tech Brief By HackerNoon

This story was originally published on HackerNoon at: https://hackernoon.com/gcore-makes-enterprise-security-bundle-free-for-public-agencies-until-end-of-the-year.

The offer follows the php2shell vulnerabilities that forced public websites offline across Europe earlier this week.

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Gcore is offering its WAAP Enterprise plan free of charge to government bodies and public agencies until December 31, 2026, to help them recover from the php2shell vulnerabilities. The plan blocks the attack path and allows sites to be brought back online while patching continues, providing a filtering layer that blocks the attack pattern.

This story was originally published on HackerNoon at: https://hackernoon.com/implementing-the-owasp-api-security-top-10-in-nodejs-and-postgresql.

OWASP API Security Top 10 (2023) with vulnerable code, working fixes and tests in Node.js: BOLA, auth, rate limits, SSRF and a CI authorization matrix.

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A hands-on walkthrough of the OWASP API Security Top 10 using a sample Node.js, Express, and PostgreSQL application. Each vulnerability is demonstrated through insecure code, followed by defensive implementations and automated tests. The guide covers authorization, authentication, resource limits, SSRF, configuration, and third-party API security, culminating in a CI authorization matrix.

This story was originally published on HackerNoon at: https://hackernoon.com/defending-ai-agent-memory-against-persistent-prompt-injection.

Explore how indirect prompt injection can persist in AI agent memory and why secure ingestion, access controls, and tool-call authorization matter.

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Indirect prompt injection can enter an AI agent through untrusted external content, persist in long-term memory, and influence actions in later sessions. The article proposes a layered defense involving structured input validation, isolated memory processing, and runtime tool-call authorization. However, its effectiveness claims require independent evidence, and the sample implementation does not yet enforce the full security boundaries described.

This story was originally published on HackerNoon at: https://hackernoon.com/inside-the-plc-runtime-what-openplc-v4-reveals-about-its-linux-environment.

Explore OpenPLC Runtime v4's architecture, processes, sockets, permissions, and Linux environment in this hands-on PLC security investigation.

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Explore OpenPLC Runtime v4's architecture, processes, sockets, permissions, and Linux environment in this hands-on PLC security investigation.

This story was originally published on HackerNoon at: https://hackernoon.com/bright-security-introduces-star-fuzzer-agentic-fuzzing-that-writes-its-own-harnesses.

In its first open source research run, it found High or Critical issues in 45% of the projects tested, and in its first month of availability it produced ten pu

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Bright Security has launched STAR Fuzzer, an agentic application fuzzer that automatically identifies security-critical functions, generates fuzzing harnesses, and searches for faults with an evolutionary algorithm. In its first open-source research run, it found High or Critical issues in 45% of the projects tested.