Note: This example does not accurately illustrate how Notes overwrites deleted data.

注意：这个例子并没有确切地说明 Notes 是如何覆盖被删除的数据的。

youdao

So as a security measure, when you delete a Notes document, Notes overwrites the deleted data to prevent anyone from retrieving it.

所以为了安全起见，在删除一个Notes文档时，Notes将覆盖被删除的数据，以防止任何人重新得到它。

youdao

In Release 4, this functionality was changed subtly so that the deleted data was overwritten with random characters to make it irretrievable.

Release 4巧妙地修改了这项功能，用随机字符覆盖删除数据，使其不能恢复。

youdao

Once in, the hacker spammed Honan's Twitter followers and deleted all the data from his various devices.

CNN: Heather Kelly,

Google said users can opt to have their data deleted after three, six, nine or 12 months of inactivity.

BBC: Press conference in New York

The information has since been deleted, the data protection agency said.

BBC: Google fined over illegal wi-fi data capture in Germany