Notes on keeping family data private
What encryption does and does not protect, how to decide who gets access to a calendar, and the ordinary ways private information escapes a household without anybody attacking it.
What actually happens to one calendar entry, from typing to storage
Encryption claims are hard to check because they are usually stated as adjectives. Following a single event through the system is easier to reason about.
12 September 2026 · 5 min read
Sharing a calendar with a school, a coach, or a grandparent
Who to give access to, at what level, and how to explain it, for the person in the family who ends up administering everything.
8 September 2026 · 5 min read
Passphrases for a shared calendar, and why there is no reset button
A shared calendar's passphrase is the only copy of its key, so nothing can reset it. What a family should decide before they need to.
20 August 2026 · 4 min read
The screenshot problem: how private data escapes without a breach
Strong encryption protects data in transit and at rest. It does nothing about screen sharing, notification previews or a calendar name in a browser tab.
30 July 2026 · 3 min read
Encryption you can't verify is a promise, not a guarantee
Encryption on a product page can mean three different things. How to tell end-to-end encryption from a claim you have no way to check.
9 July 2026 · 4 min read
What a family calendar reveals to anyone who can read it
A family calendar quietly records when the house is empty and who is seeing a doctor. Here is what leaks even when the contents are protected.
18 June 2026 · 4 min read