Articles tagged "ITリスク対策"

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.

A practical guide for small businesses with no IT staff: which accounts to protect first, what password managers cost, and how MFA methods compare.

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.

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.

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.

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.

Site won't load, looks wrong, or triggers a browser warning — here's how to tell them apart and what to do first for each symptom.

Files won't open and a ransom note appears — here are the first three things to do, what never to do, and who to call, explained step by step.

What to do — and not do — in the first 30 minutes of a company IT emergency: three principles of initial response, a symptom-based triage table, and how to route contacts (IPA, police, vendors). A guide non-IT staff can actually use.

A practical IT asset management guide for small businesses with no dedicated IT staff: what to track, how to run a first inventory, when a spreadsheet stops working, and typical tool costs.

On July 17, 2026, WordPress 7.0.2 and 6.9.5 shipped, patching wp2shell — a pre-auth RCE exploitable on default installs. What versions are affected, how the exploit chain works, and how to mitigate if you cannot update yet.

Are former employees' email and shared-drive access still active? A look at a common blind spot in account management for small and midsize businesses, and fixes to start today.

A complete map of IT risk for SMEs across three categories — being attacked, losing trust, and falling behind on regulation — with a starting point for each area.

An introduction to ransomware: common infection routes, why SMEs are targeted, a priority countermeasure map, and the initial response steps if infected.

A practical guide to the first five low-cost security steps small businesses can take before buying new tools — from password management to backups and account cleanup, mapped by impact and effort.

A neutral first-response guide for small businesses: what to check in the first 24 hours after discovering a data breach, the three guiding principles, and what not to do.

A neutral look at how cyber insurance works, what it typically covers, and what it doesn't. Understand the difference between what insurance can and cannot protect against before considering a policy.

A basic guide to IT-BCP (IT Business Continuity Plan): outage scenarios to plan for, how to map business dependencies, and how to think about recovery targets — starting with a single sheet of paper.

A neutral guide to security checksheets from business partners: common question types, why honesty matters, and the baseline SMBs need.

A plain-language guide to Japan's Electronic Bookkeeping Act for owners: three categories, mandatory vs optional, and common misunderstandings.

Invoice-system compliance in Japan often erodes after rollout. A neutral review of common operational gaps and where to check with a tax professional.

What does Japan's Freelance Act ask of companies that order work from freelancers? A neutral overview of the basic framework covering terms, payment timing, and more.