Possible Clues:

• Not backed up
• Used van (anag.)
• Liable to be lost, in a way
• Invest in fund, losing capital like many Titanic passengers
• Heathen's computer work at risk?
• Turned vase with nude almost lost
• Spent -- gone on a computer?
• Losable, as data
• Not stored on disk, say
• At risk of being lost in a hard drive failure