3 ms·
> This is exactly what is done in practice. I think you’ve got this backwards. This is exactly what is done _in theory_. In practice many of these systems are
by AmericanChopper 7y ago
> This is exactly what is done in practice.
I think you’ve got this backwards. This is exactly what is done _in theory_. In practice many of these systems are not. When I was working as a consultant, I saw so many exposed SCADA systems.
- jacquesm 7y agoTypical SCADA system from the eighties will have an open port listening to UDP traffic, if you're really lucky without any kind of checksum where each bit in a packet will toggle a relay and reply with the state of all its input channels in an ACK packet. Given the state of these systems it is amazing that they are not compromised spectacularly every other day. Or maybe they are but it does not make the news. Plenty of this stuff is running on BASIC stamps and such (no kidding) used to network systems that are even older.