It was 2002 when Oracle Corp. Chairman and Chief Executive Officer Larry Ellison said that Oracle software remains unbreakable and mocked a memo sent by arch rival Bill Gates stressing to Microsoft Corp’s employees the importance of security in the company’s products. See an article from that time here. But, upon the time, this wasn’t proven as totally true. There were many security breaches and many patches (post is here).
These days Oracle announced “Oracle Unbreakable Linux” (see more here). Word “unbreakable” should mean, among other things, something about security of Unbreakable Linux. It will be interesting to follow will this be proved.
My suggestion is: DO NOT use words “absolutely secure” and “unbreakable” in security terms never ever.