“Bug” at Free: customers were able to download the invoice of other subscribers. A “bug”, in the company's words, allowed people to access the personal information of other customers on Tuesday evening.
This is a computer problem with potentially very unfortunate consequences. Malicious individuals could use this information for identity theft. Various hacking attempts could also take place, in particular those using social engineering techniques, a scammer can, for example, more easily gain confidence in his potential victim.