France, Dec. 23 -- La Poste was targeted by a distributed denial of service (DdosS) attack on Monday, which overwhelmed its servers with targeted requests so that they become inaccessible.

The group said that this has had no impact on customer data, but it has "rendered its online services inaccessible", disrupting package delivery days before Christmas, the busiest time of the year for La Poste.

Sending letters and greeting cards is still possible, but anything requiring tracking or access to the computer systems is not.

Customers of La Banque Postale can no longer access their online banking application, although "card payments on in-store payment terminals and transfers via WERO remain available".

Online payments are still possible...