I found some explanations about the difference between safe/safety and secure/security, 1 to 5 below.
Does safe/safety include (part of) secure/security? Does secure/security include (part of) safe/safety?
(1)
In summary safe is usually keeping the person away from harm and secure is usually preventing an unwanted intrusion.
(
http://www.english-test.net/forum/ftopic6733.html)
(2)
Safety is rather protection against accidental events; security is rather protection against intentional damages
(
http://wiki.answers.com/Q/1_Explain_the_difference_between_safety_and_security)
(3)
Security: things that are done to protect human, things .. from danger or bad situations Safety: when someone or something is safe from danger or harm.
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http://englishteststore.net/index.php?option=com_communityanswers&view=answers&task=view&id=256:what-do-you-want-to-ask&Itemid=)
(4)
safety: a. The state of being safe; exemption from hurt or injury; freedom from danger. safety chain, a chain providing additional security
security: The condition of being protected from or not exposed to danger; safety.
(
http://www.dailywritingtips.com/safety-and-security/)
(5)
#17 (JamesM)
A deadly virus in an isolation room is secure because there is no risk of it escaping and harming others. It is controlled and contained. However, to walk in to the room and take no precautions for your own safety because it is in a secure environment would be foolish. The virus is still completely unsafe even when it is contained within the isolation room.
#19 (JamesM)
A man who is "safe from prosecution" is not "secure from prosecution" the more that time passes.
A child who is safe from harm is not secure from harm because he has spent several years being safe from harm.
If I am strapped into a seat in a rocket that is about to blast into outer space I am secure but I am not safe.
(
http://forum.wordreference.com/showthread.php?t=1203758)