copyright © sel 2002 critical infrastructure interdependencies and emerging threats to electric...

Copyright © SEL 2002

Critical Infrastructure Interdependencies and Emerging

Threats to Electric Power

Dr. Edmund O. Schweitzer, III

Schweitzer Engineering Laboratories

Portions of this work were funded by grant #60NANB1D0116 from theNational Institute of Standards and Technology, U.S. Dept. of Commerce.

Cyber Attacks Against Electric Utilities

Several Attacks on Utility Financial Systems Environmentalists Caught Hacking Utility IT

System Recreational Hackers Took Over Utility

Server to Play Games Insider Threat Against Texas Power Grid Insider Caught Hacking British Nuclear

Power Station Controls Cal-ISO Hacked via China Telecom

Infrastructure Interdependency Studies

NSA “Eligible Receiver”Power, banking, finance, transportation, and defense all interrelated and at risk

DOE “Black Ice”Simulated 2002 Olympic attack shows telecomm, water, gas, and transport failures

Sandia National Lab SimulationsCascading small events worse than massive event

More Attacks to Come

30 to 40 Attack Scripts Posted on Internet Every Month (ITL Bulletin, NIST)

13 Countries With Nationally Sponsored Information Warfare Efforts (G. Tenet, CIA)

Increasing Electronic Attacks in North America (IA Newsletter, DOD)

Utilities Suffer More Attacks Than Manufacturing (Riptech, Inc.)

SEL Passwords First in Digital Protective Relays Best in Digital Protective Relays P(90,6) = 906 = 531,440,000,000 Password

Combinations

SEL GE-UR Siemens7SA511

Alstom LFZR

ABB 2000R

Siemens 7SJ600

(#char, length) P(90,6) P(10,10) P(10,6) P(26,4) P(14,4) P(2,3)

Combinations 531 B 1 B 1 M 456 K 38 K 8

Access Levels 2,3,4 2 1 2 2 1

Password Defaults

OTTERTAIL

null 000000 AAAA 0000 -+-

SEL History of Security

First Microprocessor Relays: 1984

Password Protection From “Day One” Access: 3x wrong alarm

2access: every attempt alarm

Monitor Your Alarm Contacts!

Last 3 Years: Campaign for Awareness

“Concerns About Intrusions Into Remotely Accessible Substation Controllers and SCADA Systems”

“Safeguarding IEDs, Substations, and SCADA Systems Against Electronic Intrusions”

“Tools for Protecting Electric Power Systems From Electronic Intrusions”

SEL Campaign For AwarenessConference Papers on www.selinc.com

“Using Passwords to Secure Relays, Controllers, and SCADA Systems From Unauthorized Access”

“Setting and Using Secure Dial-Back Modems With SEL Relays and Communications Processors”

“Low Cost Authentication Devices for Secure Modem and Network Connections”

SEL Campaign For AwarenessApplication Guides on www.selinc.com

Safeguarding IEDs, Substations, SCADA, and Information Systems Against Cyber Attacks and Electronic Intrusions SEL University Seminar

Industrial Applications of Information Security to Protect the Electric Power Infrastructure National Institute of Standards and Technology

Critical Infrastructure Protection Grant

SEL Campaign For AwarenessSeminars and Research Projects

NIST Critical InfrastructureProtection Grant

SEL – Research Lead, Primary Contractor

WSU and UI – Subcontractors

Five Grant Objectives

1. Harden substations

2. Apply Internet protocol security

3. Assess security and survivability

4. Prototype secure information infrastructure

5. Foster InfoSec awareness in utilities

Electronic Access Vulnerabilities

Netw orkInterface

SubstationController

Remote SCADA

ATM / Fram e Relay

Local Control

IED

IED

IED

IED

IED

Netw orkInterface

Remote Access

Router

Modem

Router

Remote Access

5

4

Internet

1

3

2

Telecomm

Remote Access

Modem

Securing Substation Communications

Netw orkInterface

SubstationController

Remote SCADA

ATM / Fram e RelayIED

IED

IED

IED

IED

Netw orkInterface

VPN Router

Modem

VPN Router

Remote Access

Internet

LockCrypto

Remote Access

Crypto

Crypto

Crypto

Crypto

Local Control

Crypto

Telecomm

Remote Access

Modem

Key

Low Cost Authentication Devices

Proximity Reader and Badge Token Key Generators

Programmable Buttons Fingerprint Scanner

Low Cost Secure Modem Devices

Modem Key / Lock

Matched Crypto-Modems

Programmable Password-Controlled Modem

Protect Your SystemsStop Accidental / Deliberate Mis-Settings

Physical Access Controls

Access Warning Statements

Verify Settings (e.g., “Are You Sure?”)

Two-Tiered Controls (Show / Set)

Electronic Red Tags

Electronic User Authentication

Password / PIN Access Controls Teach password / PIN security Advocate strong passwords Monitor compliance

Different Passwords / PINs for Differing Locales, Equipment, and Systems

Protect Your SystemsStop Unauthorized Access

Change Password / PINs Immediately Upon Contractor installation and / or

maintenance

Suspected intrusions

Personnel turnover or conflict

Protect Your SystemsStop Unauthorized Access

Protect Your SystemsDetect Intrusions

Monitor Events for Intrusion and Functionality

Monitor Alarm Contacts

Audit / Access Logs

Automate Alarm Responses Audio and visual indicators Auto-transmit warnings

Protect Your Systems Stop Network Attacks

Multifactor Authentication / Access Control

Automated Lock-Outs

Proactive Log Analyses

Separation of Functionality

Data Packet Encryption

Protect Your Systems Stop Network Attacks

Virus Scanners

Firewalls

Intrusion Detection Systems

Internet Protocol Security (IPSec)

Virtual Private Networks (HW or SW)

Public Key Certificates

Open IssuesWill RTO’s Affect Reliability?

New Management Layer

More People Involved

Bigger System to Operate

New Single Point of Failure / Attack

Population and Load Growing

Generation Not Near Loads

No New Line Construction in 15 Years

T&D Pushed to Critical System Limits

Open IssuesTransmission Shortage

Industry Action Items

Recognize the Problems

Campaign for Awareness

Apply Information Security Principles

Test Fail-Over Systems and Emergency Services

Promote and Build New Transmission Lines

Design Redundant Controls and SCADA Systems

Social Effects of Inaction Loss of Economic

Opportunity

Higher Energy Prices

Less Reliable Service

Jeopardize Critical Infrastructures

Hurts the Poor and Vulnerable the Most