Queue occupancy and server size distribution of a queue length dependent vacation queue with an optional service

The feed contains multiple arXiv papers with several potential security implications. Notable items include a (truncated) paper on steganographic capabilities of large language models (LLMs) and an explicit decision-theoretic formulation for steganography/LLM monitoring, a study on secure transmission in fluid-antenna-aided ISAC systems that optimizes antenna placement and beamforming to mitigate eavesdropping, and semantic-communication work modeling context-dependent semantic noise. Applied communications work (BeamVLM) proposes VLM-based beam prediction for UAV-ground links (impacts on UAV/