<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"><channel><title>Karol Budzyn — Writing</title><description>Essays and technical notes on cryptography, post-quantum migration and the security of AI systems.</description><link>https://www.trashpanda-sec.pl/</link><language>en-gb</language><item><title>Zero-Knowledge Proofs: How to Convince Someone Without Saying Anything</title><link>https://www.trashpanda-sec.pl/blog/zero-knowledge-proofs/</link><guid isPermaLink="true">https://www.trashpanda-sec.pl/blog/zero-knowledge-proofs/</guid><description>ZKPs let you convince a verifier that a statement is true while revealing zero information beyond that fact. Not an approximation, a strict mathematical guarantee. Here is how it actually works.</description><pubDate>Tue, 09 Jun 2026 00:00:00 GMT</pubDate><category>Cryptography</category><category>ZKP</category><category>Zero-Knowledge</category><category>zk-SNARKs</category><category>Privacy</category><category>Research</category></item><item><title>Agentic AI and LLM Security: What Changes When the Model Can Act</title><link>https://www.trashpanda-sec.pl/blog/agentic-ai-llm-security/</link><guid isPermaLink="true">https://www.trashpanda-sec.pl/blog/agentic-ai-llm-security/</guid><description>LLMs that browse the web, write code, and call APIs are a fundamentally different threat surface than chatbots. This post breaks down the attack classes unique to agentic systems and what defenders actually need to think about.</description><pubDate>Thu, 16 Apr 2026 00:00:00 GMT</pubDate><category>AI Security</category><category>LLM</category><category>Agentic AI</category><category>Prompt Injection</category><category>Red Teaming</category><category>Supply Chain</category></item><item><title>Cyber Resilience in Banking: DORA, FFIEC, and SWIFT&apos;s Security Controls</title><link>https://www.trashpanda-sec.pl/blog/banking-cybersecurity-standards/</link><guid isPermaLink="true">https://www.trashpanda-sec.pl/blog/banking-cybersecurity-standards/</guid><description>A practitioner&apos;s guide to the major cybersecurity frameworks governing financial institutions - DORA in the EU, the FFIEC guidelines in the US, and the SWIFT Customer Security Programme worldwide.</description><pubDate>Tue, 24 Mar 2026 00:00:00 GMT</pubDate><category>Banking Security</category><category>DORA</category><category>FFIEC</category><category>SWIFT</category><category>Compliance</category><category>Financial Services</category></item><item><title>PCI DSS 4.0: What the Standard Actually Demands</title><link>https://www.trashpanda-sec.pl/blog/pci-dss-deep-dive/</link><guid isPermaLink="true">https://www.trashpanda-sec.pl/blog/pci-dss-deep-dive/</guid><description>A practitioner&apos;s breakdown of PCI DSS v4.0 - its twelve requirements, the 2025 deadline for future-dated controls, and where organisations most commonly fall short.</description><pubDate>Tue, 17 Mar 2026 00:00:00 GMT</pubDate><category>PCI DSS</category><category>Compliance</category><category>Payment Security</category><category>Cryptography</category><category>Penetration Testing</category></item><item><title>Quantum Computing and the Coming Cryptographic Reckoning</title><link>https://www.trashpanda-sec.pl/blog/quantum-computing-and-security/</link><guid isPermaLink="true">https://www.trashpanda-sec.pl/blog/quantum-computing-and-security/</guid><description>Quantum computers will break RSA-2048 and ECC-256 in hours once they&apos;re powerful enough. Here&apos;s what that means for the systems we secure today - and how to prepare before it&apos;s too late.</description><pubDate>Mon, 03 Nov 2025 00:00:00 GMT</pubDate><category>Quantum</category><category>Cryptography</category><category>Post-Quantum</category><category>NIST</category><category>PKI</category></item><item><title>Azure Security in 2025: Real Threats and AZ-500 Defenses</title><link>https://www.trashpanda-sec.pl/blog/azure-security-az500-threats/</link><guid isPermaLink="true">https://www.trashpanda-sec.pl/blog/azure-security-az500-threats/</guid><description>A practical look at the most dangerous attack vectors targeting Azure environments right now, mapped to the AZ-500 control domains - identity, network, data, and detection.</description><pubDate>Wed, 10 Sep 2025 00:00:00 GMT</pubDate><category>Azure</category><category>AZ-500</category><category>Cloud Security</category><category>Identity</category><category>SIEM</category><category>Threat Intelligence</category></item><item><title>The Evolution of Cloud Computing: From Virtualisation to Sovereign Edge</title><link>https://www.trashpanda-sec.pl/blog/cloud-computing-evolution/</link><guid isPermaLink="true">https://www.trashpanda-sec.pl/blog/cloud-computing-evolution/</guid><description>How cloud computing transformed from shared hosting on steroids into the distributed, multi-layered infrastructure that now runs critical national infrastructure - and what comes next.</description><pubDate>Tue, 22 Jul 2025 00:00:00 GMT</pubDate><category>Cloud</category><category>Architecture</category><category>Azure</category><category>Edge Computing</category><category>History</category></item><item><title>Docker Security: Don&apos;t Ship Vulnerabilities in Your Containers</title><link>https://www.trashpanda-sec.pl/blog/docker-security-best-practices/</link><guid isPermaLink="true">https://www.trashpanda-sec.pl/blog/docker-security-best-practices/</guid><description>From rootless containers and read-only filesystems to image scanning and Seccomp profiles - a practical checklist for production-grade Docker security.</description><pubDate>Mon, 20 Jan 2025 00:00:00 GMT</pubDate><category>Docker</category><category>Containers</category><category>DevSecOps</category><category>Security</category><category>Cloud</category></item><item><title>Content Security Policy: The Developer&apos;s Defence Against XSS</title><link>https://www.trashpanda-sec.pl/blog/understanding-csp/</link><guid isPermaLink="true">https://www.trashpanda-sec.pl/blog/understanding-csp/</guid><description>A deep dive into Content Security Policy (CSP) - what it is, how to craft a strict policy, and how to audit it with browser DevTools and security scanners.</description><pubDate>Tue, 03 Dec 2024 00:00:00 GMT</pubDate><category>Web Security</category><category>CSP</category><category>XSS</category><category>HTTP Headers</category><category>OWASP</category></item><item><title>Linux Server Hardening: A Practical Checklist</title><link>https://www.trashpanda-sec.pl/blog/hardening-linux-server/</link><guid isPermaLink="true">https://www.trashpanda-sec.pl/blog/hardening-linux-server/</guid><description>A step-by-step guide to hardening a fresh Ubuntu/Debian server - from SSH lockdown and firewall rules to kernel parameter tuning and audit logging.</description><pubDate>Fri, 15 Nov 2024 00:00:00 GMT</pubDate><category>Linux</category><category>Hardening</category><category>SSH</category><category>UFW</category><category>Security</category></item></channel></rss>