Retrieve deleted file from ipfs

Not able to retrieve file from IPFS once deleted from local storage and garbage collector because it was not retreived by any other node. how to over come this? basically I want to secure a file from hacker. but once it is deleted from local and garbage collector I am not able to retrieve it. Any sugestions?

Thanks in advance.

Have an other peer pin your data, or use any other backup stategy (sync with cloud, good ol’ hard drive, …)