Newsgroups: comp.robotics.misc,sci.engr.control,alt.engineering.electrical
Subject: Re: Advantages & Disadvantage of SCADA system?
References: <[email protected]> <[email protected]>
"[email protected]"  writes:

> On Feb 12, 4:59 am, "RsK"  wrote:
> > Any body please tell me briefly what are the Advantages & Disadvantage
> > of SCADA system? in practical world?.
> > best regards,
> > Rizwan
> 
> One disadvantage is that TCP/IP based SCADA systems are (extremely)
> vulnerable to cyberwarefare/cyberterrorism attacks which, in the worst
> scenario case, could cause not only financial loss but also loss of
> life, directly or indirectly.
> 
> Source: Wikipedia

Baddly designed or just old SCADA systems can be vulnerable to 
cyberwarefare/cyberterrorism attacks, no matter if they 
use TCP/IP or not. A modern well designed SCADA system 
based on TCP/IP protocols can be safer than many older systems 
bacause uf the use of modern data encryption and authentication 
tools.
 
That are many old system nowadays in use that have quite poor 
security on their communications. There are many systems in use 
that use radio communications with a protocol that does not 
use any ancryption or reliable authentication. You just need 
a suitable radio and modem to be able to control the devices 
on the field (you need to get to know the used protocol and 
device addresses). Not very secure.  
 

-- 
Tomi Engdahl (http://www.iki.fi/then/)
Take a look at my electronics web links and documents at 
http://www.epanorama.net/