“Businesses in Ukraine were hit hardest, and since many TNT operations and communications are based in the country, a significant proportion of its systems were infiltrated and data encrypted – locking employees out – as a result.
‘Manual processes’ are still being used to put packages through the system, and TNT says it is ‘reasonably possible’ that some information will never be fully recovered.”
Source: Customers ‘furious’ with TNT after cyber-attack meltdown – BBC News