At conferences about digital preservation, we often hear the same stories about things that went wrong first and (in some cases)how it was repaired afterwards: ” Luckily some of the lost bits were saved”. The Domesday book, the Viking mission to Mars etcetera.
On the Atlas of Digital Damages I collected some of these well known stories. However the list is limited. The incidents I found so far, mainly occurred in the US, and quite often more than 5 years ago or even longer. I doubt whether there were no incidents in the last 5 years or so.
Source: Barbara Sierman