Should we be reminded that bugs such as Apple's GoTo Fail can exist? Or like Heartbleed, which actually was in open source software? If they were to put a back

Should we be reminded that bugs such as Apple's GoTo Fail can exist? Or like Heartbleed, which actually was in open source software? If they were to put a backdoor in it, whoever would find it would probably just take it for some error they made in coding.