Assuming you trust your hosting company (maybe that's another discussion?) I don't think it's possible to leak memory contents VPS-to-VPS but I could be wrong.
In any case, if I had a pile of Bitcoin (unfortunately I do not) I wouldn't put it all in one wallet on one server. From what I've heard, paper wallets are the safest.
That said, maybe "zero out" your wallet before switching VPS providers, changing plans, etc.
"It is worth noting that the data was not live, in that it was not due to sharing of disk contents between running instances of virtual servers. It is understood that the data is due to disk and swap data not being zeroed after use."
In any case, if I had a pile of Bitcoin (unfortunately I do not) I wouldn't put it all in one wallet on one server. From what I've heard, paper wallets are the safest.
That said, maybe "zero out" your wallet before switching VPS providers, changing plans, etc.
This is from 2012 but probably still relevant as we saw with the recent Digital Ocean outrage. http://www.contextis.com/research/blog/dirty-disks-raise-new...
"It is worth noting that the data was not live, in that it was not due to sharing of disk contents between running instances of virtual servers. It is understood that the data is due to disk and swap data not being zeroed after use."