402InfoSec Blog
Plain-English cybersecurity writing for real decisions.
Articles for small businesses, founders, executives, families, and teams that need clear guidance on accounts, policies, insurance questions, vendors, cloud tools, and resilience without scare tactics or jargon fog.
Blog Topics
Start with the decision in front of you.
The blog is organized around the practical moments where security becomes a business decision: accounts, paperwork, tools, vendors, resilience, and the habits that keep work moving.
Domain Security Basics: SPF, DKIM, DMARC, and Why They Matter
A plain-English guide to SPF, DKIM, and DMARC for small businesses using branded email domains and trying to reduce spoofing and trust problems.
Read featured articleCybersecurity Policies That Actually Match Reality
Good policies should reflect how your business works, who uses what, and what you can actually enforce when something goes wrong.
Read article Account protectionA Practical Password Manager Setup for Families and Small Businesses
A grounded guide to setting up a password manager the right way for family life, shared business accounts, unique passwords, and safer recovery.
Read article Business resilienceCybersecurity Is Also Business Resilience
Cybersecurity is not only about hackers, phishing emails, ransomware, and passwords. For small businesses, it is also about whether the business can keep running when technology fails, a vendor goes down, a risky change breaks something, or normal operations get interrupted.
Read article Security buyingWhat to Do Before You Buy Cybersecurity Tools
Before you buy another security tool, figure out what matters, who owns it, and how your business actually works.
Read article Email securityWhy Your Email Account Is Probably Your Most Important Business Asset
Email is more than messaging. It is your reset hub, approval channel, fraud target, and customer trust layer.
Read article Small business basicsThe First 10 Security Controls Every Small Business Should Have
A practical, source-backed guide to the first cybersecurity controls most small businesses should put in place before buying complex tools.
Read articleLooking for step-by-step help instead of short-form articles?
Open the Security GuidesYou do not need a perfect security program to start. You need a clear next move.
Start with a lightweight conversation about the decision in front of you and the next step that would reduce risk.