@user567543 its not just concerns about information being leaked its the whole picture of them trying to gather so much information on people.
The job you do / have applied for
The information on your CV.
Who your kids are,
Your bank details
How they are at school
How they travel
Then when kids start applying for jobs, they then have everything from their mothers DOB.
Honestly it's worrying how much information is being collected and put together.