Weekly Cyber Intel Brief | 2026-04-24

Weekly Cyber Intel Brief: Week Ending 2026-04-24

PressContact Blog · 1 minute read

This edition tracks the week’s highest-impact cybersecurity and AI-security developments, selected for relevance to security, technology, and communications leaders.

This issue highlights the active deployment of post-quantum encryption by the Kyber ransomware group and a major supply chain breach at Rockstar Games via Snowflake. It also features Foresiet's analysis of critical AI security incidents, including internal data exposure caused by agent hallucinations.

Sources - [Kyber Ransomware Gang Deploys Post-Quantum Encryption in Defense Sector Attack](https://www.bleepingcomputer.com/news/security/kyber-ransomware-gang-toys-with-post-quantum-encryption-on-windows) - [Rockstar Games Data Breach Linked to Third-Party Snowflake Integration](https://www.bleepingcomputer.com/news/security/shinyhunters-linked-to-rockstar-games-data-breach-via-snowflake) - [Foresiet Analysis Details Critical AI Agent Control Failures and Data Exposure](https://foresiet.com/blog/ai-security-incidents-attack-paths-april-2026)