There are more to this issue. There are damages, compensations, criminal/professional negligence, moral responsibilities,... especially to 'victims'. These are not detailed out in this post because individual cases can be vastly different.

Let us be mindful of example cases: research work with identities (ID eg. photographs and/or names) of ‘subjects’ in study; news with ID of victims of some crimes (some newspapers like to show pictures of half naked bodies of rape, accident and domestic violence victims); blogging with (meta) information that can lead to ID of victims; …

We must be very careful when we deal with children (minors), disabled, handicapped, and of course some powerful persons. Our own actions may be undoing our good intention.

We cannot (really) change our our past (actions). So, for what we have done we can only apologise and wait for the results to catch up with us. In future, we will try our best to consider possibilities with 'mettaa' เมตตา and 'pa~n~naa' ปัญญา in mind as well as the laws.