Klassroom Notes

Security & Privacy

Practical, no-jargon steps to protect your accounts, your data, and your customers - from passwords and two-factor authentication to backups, phishing, and what 'free' services really do with your information.

Klassroom Notes
Why so many useful tools cost nothing - and what they're actually getting from you.

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Practical notes on running a small business more efficiently - tools, workflows, and the occasional observation from 30 years of systems work. Short, useful, and infrequent.