Communication
A safe data can be insecure, if the data is monitored but not tampered during transit
A secure data can be unsafe, if the data is not tampered during transit but has got corrupted due to physical or electronic medium
Local storage
A safe data can be insecure, if the data is stored without corruption but data is visible to third party
A secure data can be unsafe, if the data has username or password to access but hard drive is corrupt
Cloud storage
A safe data can be in secure, if the data is stored as it was transferred but the data was compromised during transmission by network bots or network protocol snooping
A secure data can be unsafe, if the data transferred gets corrupted and no checksums or data consistency checking is available
Computing
A safe data can be insecure, if the data structure is consistent with user data but a Trojan program is using the same data through some access maliciously within the computing unit
A secure data can be unsafe, if the data structure has a data that has been computed incorrectly by the user program and updated due to a bug in the system
Surprisingly its OK to answer homework questions on SU. – davidgo – 2016-03-17T03:46:42.177
This sounds most suspiciously like a first-year university CS assignment question… (I don't mean to be rude if it's genuine.) – msanford – 2010-06-27T22:54:50.937
will it be answered ever in a exact answer?? – Ravisha – 2011-03-11T09:25:12.837