I have deleted an important file

I never really thought about it Roger, but who would want to hack into my computer I'm a retired heating engineer not an MI5 agent, what is the danger to which you allude?

Do you have a bank account Lovejoy? If so, I would want to hack into your computer.

Might depend on exactly which passwords you were storing on that computer. Credit card accounts, internet banking passwords, etc. If you don't care, neither do I.