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S-HAZOP - merging OT Cyber & Safety

About me

Disclaimer

►S-HAZOP is an EY Methodology

►Images in this presentation are derived from► EY

► Tennessee Eastman Chemicals

► Honeywell

► International Congress of Catalysis

► DHS.gov.us

All rights preserved to original owners

A prelude …a status update on our 3 years ongoing OT Honeynet research

Still seeing lots of malicious attacks – with safety in scope !

The MENA PLC is still the worst for 3rd year running

Most traffic coming from China, Russia, USA, Iran (Not Research)

What are the current scenarios

Purity Price Euro/KG

98% 78

99% 392

100% 649,000

Paracetamol 2017 Prices

Quiz

Assume NOWYou have full access to a REAL plant

Find the Soft SpotFor a quick disaster

Tennessee Eastman

15.1Time Constant of 60 Min

11.2

114.5

96.0

OT hackers

►OT Hackers need to deal with a lot of variables

►Obtaining access is NOT Obtaining control

►Breaking INTO the system Is just the beginning

Break attacks

Production damage attacks

Toxic emissions attack

Lots of knowledge

►Not Yet

►Not Yet

►NOW

►Too Late

Impact of 8 Hours of DDoS on a Reactor Pressure Sensor at Random Times

The changes done at 200c are NOT the same as on 230c

New OT Cyber kill chain (post Trisis)

So we need to “reconsider” how we calculate plant operations risks

Security HAZOP study

S-HAZOP (Independent layers of protection)

S-HAZOP (Process safety & cyber threats)

S-HAZOP (Components break down)

Example

S-HAZOP …the tool

S-HAZOP …the tool in action

QUESTIONS?

Thank you

References

• Dragos Activity Groups. https://dragos.com/adversaries/

• Diamond Model. http://www.activeresponse.org/the-diamond-model/

• Starlink Telsarati article. https://www.teslarati.com/spacex-starlink-satellite-internet-us-air-force-testing/

• Collection Management Frameworks. https://dragos.com/resource/collection-management-frameworks-beyond-asset-inventories-for-preparing-for-and-responding-to-cyber-threats/

• Consequence Analysis. https://dragos.com/resource/dependency-modeling-for-identifying-cybersecurity-crown-jewels-in-an-ics-environment/