But it also means that private organisations, including search engines, have no obligation to return uncensored results, and no need to be transparent about what they decide to block.
The question is not whether the recipient of a tainted gift is under a moral obligation to return it, but whether there is a legal obligation to do so.
For those reasons, the diary did not constitute confidential information, and the respondent had no obligation to return it to the appellant on termination of her employment.