🔒 数据隐私：你的数据你做主🔒 Data Privacy: Your Data, Your Call

上一片里，小电脑被数据洪流淹没，见识了数据的威力。这一片它要学另一课：有些数据，打死也不能给。 Last leaf, the little computer was flooded and saw how mighty data is. This leaf teaches the other lesson: some data must never be given away.

第 1 步：隐私就是不想被知道的事Step 1: Privacy is what you keep to yourself

先看看小电脑是怎么被一只手电筒“套话”的——你遇到过吗？First watch the little computer get tricked by a flashlight app — has this happened to you?

APP 权限弹窗：手电筒要通讯录？不给 — 位置、通讯录、人脸，都是隐私：不想被知道的事。手电筒照个亮，却张口要通讯录——小电脑举起牌子：不给！记住，只给必要的权限。 Location, contacts, your face — all privacy: things you keep to yourself. A flashlight needs light, yet asks for contacts — the little computer holds up its sign: Deny! Only ever grant what is needed.

大门守住了，小偷还可能猜你的钥匙——密码这把锁结实吗？Door guarded — but can a thief guess your key? How strong is your password lock?

第 2 步：密码越长越安全Step 2: Longer passwords win

密码强度表：弱、中、强 — 123456 这种密码，小电脑一秒就猜中。密码要长、每个地方都不一样，再打开两步验证——等于给大门加了第二把锁。 A password like 123456 falls in one second. Make it long, never reuse it, and switch on two-factor — a second lock on the same door.

万一有人硬抢呢？别怕，还有法律这面盾。What if someone grabs it by force? Do not fear — the law is your shield.

第 3 步：法律是你的盾Step 3: The law is your shield

个人信息保护盾：你的数据你做主 — 个人信息保护法说了：你的数据你做主，APP 不能乱拿。还要记住一句话：免费的最贵——拿走隐私换的免费，最贵。 The personal-information law says: your data, your call — no app may grab it at will. And remember: free is the most expensive — free things paid with privacy cost the most.

🎮 你来当审查员（30 秒）🎮 Your turn: be the reviewer (30 seconds)

道理讲完了。先试试上面的密码强度条，再接 4 单审查：权限该给就给，不该给就举牌说不。Theory done. First play with the password bar above, then take 4 review cases: allow what is needed, deny the rest.

一句话记住它：隐私 = 不想被知道的事；只给必要权限，密码要长要独，两步验证锁死，法律撑腰。 Remember it in one line: privacy = what you keep to yourself; grant only what is needed, keep passwords long and unique, lock with two-factor, backed by law.

权限管理：只给必要的，手电筒不配拿通讯录Permissions: only what is needed — a flashlight gets no contacts 密码安全：要长、要独一无二，还要开两步验证Passwords: long, unique, plus two-factor on 法律撑腰：个人信息保护法；免费的最贵Law backs you: protection law; free is the most expensive

内容参考 OpenStax 等公开教材，多来源核对 · AI 生成、人工审核 · 发现错误欢迎指正，帮这片叶子长得更好。 Based on OpenStax and other open textbooks, cross-checked across sources · AI-generated, human-reviewed · Spotted a mistake? Tell us — help this leaf grow.