[SystemSafety] Does "reliable" mean "safe" and or "secure" or neither?

RICQUE Bertrand (SAGEM DEFENSE SECURITE) bertrand.ricque at sagem.com
Wed Apr 20 16:23:51 CEST 2016


I would stick to the Laprie taxonomy :

Dependability =  Availability + Reliability + Safety + Integrity(not the SIL one, the true one) + Maintainability
Security = Integrity + Confidentiality

Bertrand Ricque
Program Manager
Optronics and Defence Division
Sights Program
Mob : +33 6 87 47 84 64
Tel : +33 1 58 11 96 82
Bertrand.ricque at sagem.com

-----Original Message-----
From: systemsafety [mailto:systemsafety-bounces at lists.techfak.uni-bielefeld.de] On Behalf Of Peter Bernard Ladkin
Sent: Monday, April 18, 2016 8:21 PM
To: systemsafety at lists.techfak.uni-bielefeld.de
Subject: Re: [SystemSafety] Does "reliable" mean "safe" and or "secure" or neither?

On 2016-04-18 18:25 , Chris Hills wrote:
> What is the current thinking?   Does "reliable" also infer safe or secure? 

The system consists of the following.

You, tied up in a chair, fixed to the floor. Along with your nemesis, with a rifle, who is pointing it at you, and is an excellent shot, and intends to shoot. Heshe pulls the trigger.

If the rifle is reliable, the system is unsafe.

If the rifle is completely unreliable, the system is safe.

PBL
Prof. Peter Bernard Ladkin, Faculty of Technology, University of Bielefeld, 33594 Bielefeld, Germany Je suis Charlie
Tel+msg +49 (0)521 880 7319  www.rvs.uni-bielefeld.de





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