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Useful articles about SEO, Web Development, and IT

577 articles

Business DX2026-07-29
Email Spoofing Protection for Small Businesses: SPF, DKIM and DMARC Explained
How SPF, DKIM and DMARC stop attackers sending mail as your domain: checking your setup, what DMARC policies mean, a phased rollout, and cost ranges.
中小企業DXITリスク対策保守運用+1
Software Development2026-07-29
MCP 2026-07-28 Spec: Stateless Core, Extensions and Hardened Authorization
MCP 2026-07-28 explained: no initialize handshake, no session IDs, server/discover, MRTR, the Tasks extension, hardened OAuth, and what breaks in existing servers.
MCPModel Context ProtocolAIエージェント+1
AI2026-07-29
OpenAI Codex Security: The AI Vulnerability Scanner CLI and SDK, Explained
A hands-on guide to @openai/codex-security, the open-source CLI and TypeScript SDK for OpenAI's security agent: the find-validate-patch pipeline, key commands, pre-commit hooks, CI integration with --fail-on-severity and SARIF export, cost controls, and requirements — based on the repository's primary sources.
OpenAI CodexOpenAIセキュリティ+1
Business DX2026-07-28
Account, Password and MFA Management for Small Businesses — The First Three Steps
A practical guide for small businesses with no IT staff: which accounts to protect first, what password managers cost, and how MFA methods compare.
中小企業DXITリスク対策ひとり情シス+1
Software Development2026-07-28
Scriptc — Vercel Labs' TypeScript-to-Native Compiler with No JavaScript Engine in the Binary
Vercel Labs' scriptc compiles TypeScript into native binaries with no Node or V8 inside — how the three-tier model works and how it compares to Bun and Deno.
TypeScriptVercel開発ツール+2
Business DX2026-07-27
Choosing an E-Signature Service — Costs, Types, and Rollout Steps
How SMBs pick an e-signature service: certificate-based vs platform-based signing, price bands, rollout steps, and what to do when a counterparty wants paper.
中小企業DX業務効率化ITリスク対策
AI2026-07-27
Kimi K3 Open Weights Are Out — What It Actually Takes to Self-Host a 2.8T MoE (MXFP4, ~1.4TB, vLLM/SGLang)
Moonshot released Kimi K3 open weights on July 26, 2026. At MXFP4 the weights alone are ~1.4TB — self-hosting means a multi-node cluster, not one GPU.
Kimi K3Moonshot AIOpen Weight LLM+4
Business DX2026-07-26
When to Replace Company PCs — Refresh Cycles, Lease vs Buy, and Budgeting
When to replace company PCs: refresh cycles by role, cost bands per machine, buy vs lease vs subscription, secure disposal, and how to smooth the budget.
中小企業DXひとり情シスIT予算+1
AI2026-07-26
Claude Opus 5 Deep Dive — Anthropic's July 24, 2026 Release Keeps $5/$25 While Frontier-Bench Goes 18.7% → 44.4% 1M Context, 128K Output (300K via Batch), the New xhigh Effort Level, OSWorld 2.0 at 70.57% and SWE-bench Verified at 96.0% Opus 4.8 Goes Legacy, Opus 4.1 Retires August 5, 2026 — and thinking: disabled with xhigh Now Returns a 400
Anthropic released Claude Opus 5 on July 24, 2026. Pricing holds at $5 / $25 per M tokens, unchanged from Opus 4.8, while Frontier-Bench v0.1 jumps 18.7% → 44.4% (xhigh), OSWorld 2.0 goes 55.7% → 70.57%, and ARC-AGI-3 goes 1.52% → 30.16%. It ships a 1M context window (default = maximum) with 128K max output (300K via the Batches API), and drops the minimum cacheable prompt to 512 tokens. The new xhigh effort level — above high, below max — targets agentic runs of 30+ minutes and actually beats max (43.3%) on Frontier-Bench. Breaking changes: thinking cannot be disabled at xhigh or max (the API returns a 400), Opus 4.8 is now legacy, and Opus 4.1 retires August 5, 2026. SWE-bench Verified hits 96.0%, but SWE-bench Pro at 79.2% stays just short of Fable 5's 80.0% — Opus 5 replaces Opus 4.8, not Fable 5.
Claude Opus 5AnthropicLLM+4
Business DX2026-07-25
How to Audit Your Company's SaaS Subscriptions — Finding Duplicates and Ghost Accounts
A practical guide for small businesses to audit recurring SaaS costs: how to inventory contracts, spot duplicate tools and ghost accounts, and decide what to cut.
中小企業DXひとり情シスIT予算+2
AI2026-07-25
OpenAI Codex 26.715 — ChatGPT Voice (GPT-Live) and Multi-Folder Projects
Codex app update 26.715 (July 23, 2026): GPT-Live-powered ChatGPT Voice steers work across Chat, Work, and Codex, and local projects gain multi-folder support.
OpenAI CodexCodexOpenAI+3
Business DX2026-07-24
Who Owns the Software You Paid to Build? Source Code and Copyright Explained
Paying for development does not automatically make the copyright or source code yours. This guide explains ownership basics, the contract clauses to check, and what goes wrong when you cannot get the source code.
中小企業DXシステム発注ITリスク対策
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