A reference glossary of core photography terms covering exposure, optics, composition, sensor technology, and file formats. Exposure Aperture — The opening inside a lens through which light passes, expressed as an f-number (f/1.8, f/8, f/16). A lower f-number means a wider opening and more light; a higher f-number means a narrower opening and less light. Aperture also controls depth of field: wide apertures produce shallow focus, narrow apertures produce deeper focus across the frame.

ShinyHunters is a financially motivated criminal extortion group that emerged on dark web forums in May 2020, offering millions of stolen user records from more than a dozen companies in a single two-week burst. Believed to have formed as early as 2019, the group operates under a pay-or-leak model: breach an organization, issue a private ransom demand, and publish or auction the stolen data if payment is refused. That model, refined over six years, has made ShinyHunters one of the most prolific data theft operations on record, with attributed breaches spanning retail, finance, aviation, education, defense contracting, telecommunications, and sovereign government infrastructure.

NVIDIA and Corning Incorporated have announced a multiyear partnership to scale U.S.-based optical connectivity manufacturing for AI infrastructure. The deal commits Corning to a tenfold expansion of its domestic optical connectivity manufacturing capacity, a greater than 50% increase in U.S. fiber production, and the construction of three new facilities across North Carolina and Texas — creating more than 3,000 jobs in the process. To understand why this matters, it helps to understand what optical connectivity actually is and where it sits in the AI infrastructure stack.

Agentic AI refers to a class of artificial intelligence systems designed to act autonomously toward defined goals, making decisions, initiating actions, and adapting behavior based on changing conditions and feedback. Unlike traditional AI models that primarily respond to direct inputs with outputs, agentic AI systems operate with a degree of independence, often orchestrating multiple steps, tools, or processes to achieve an objective over time. The term has gained prominence alongside advances in large language models, automation frameworks, and multi-agent systems, where software entities increasingly resemble goal-driven actors rather than passive tools.

WiFi above 2.4 GHz gets shorter range, higher throughput, and most of the industry’s attention. WiFi below 1 GHz gets the opposite: longer range, lower throughput, and almost no consumer coverage despite being standardized in 2016. 802.11ah — marketed as WiFi HaLow — is a genuinely distinct technology addressing problems that neither standard WiFi nor cellular IoT handles well. It deserves more attention than it receives. Why Sub-1 GHz Matters for IoT The physics of radio propagation favor lower frequencies for range and obstacle penetration.

Table of Contents What is MCP? Core Concepts Architecture Getting Started Building an MCP Server Building an MCP Client Transport Mechanisms Tools, Resources & Prompts Security Considerations Debugging & Testing Real-World Examples What is MCP? Model Context Protocol (MCP) is an open standard developed by Anthropic that enables AI models to securely connect with external data sources, tools, and services. It defines a universal, open protocol for how AI applications communicate with the outside world.

A working reference for the vocabulary of modern AI — organized by conceptual layer, not alphabetically. Each definition is written for practitioners and informed generalists: precise enough to cite, plain enough to share. Foundation Layer Large Language Model (LLM) A neural network trained on vast quantities of text to predict and generate language. LLMs learn statistical patterns across billions of documents, enabling them to answer questions, write code, summarize text, and engage in dialogue.

A working reference for the language of modern cybersecurity — organized by threat surface and defensive domain. Definitions are written for security professionals, technical managers, and informed practitioners who need precision without padding. Threat Actors and Motivation Advanced Persistent Threat (APT) A sophisticated, long-duration cyberattack campaign — typically state-sponsored — characterized by stealth, patience, and a specific high-value target. APT actors infiltrate networks and maintain persistent access for months or years before executing their objective.

A working reference for the vocabulary of digital marketing and growth — organized by channel and discipline. Definitions are written for practitioners, founders, and analysts who move fast and need the concepts straight. Acquisition and Channels CAC (Customer Acquisition Cost) The total cost of acquiring a new customer — all sales and marketing spend divided by the number of new customers acquired in the same period. CAC is the fundamental unit economics metric on the cost side.

A working reference for the vocabulary of financial markets — organized by domain, not alphabetically. Definitions are written for investors, analysts, financial journalists, and informed participants who need precision without the padding of a textbook. Market Structure Equity Ownership interest in a company, represented by shares of stock. Equity holders are residual claimants — they receive what remains after all creditors and obligations are satisfied. Common equity carries voting rights; preferred equity has priority in distributions but typically limited voting power.