Internet Security Overview Defence: Cryptography Offence: RFIDs and Surveillance Network Security and Surveillance G. Sivakumar Computer Science and Engineering IIT Bombay [email protected]October 29, 2004 1 Internet Security Overview Some Puzzles 2 Defence: Cryptography 3 Offence: RFIDs and Surveillance G. Sivakumar Computer Science and Engineering IIT Bombay [email protected]Network Security and Surveillance
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Network Security and Surveillancesiva/talks/crypto-ips.pdf · Offence: RFIDs and Surveillance Network Security and Surveillance G. Sivakumar Computer Science and Engineering IIT
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G. Sivakumar Computer Science and Engineering IIT Bombay [email protected]
Network Security and Surveillance
Internet Security OverviewDefence: Cryptography
Offence: RFIDs and SurveillanceSome Puzzles
Internet’s Growth and Charter
Information AnyTime, AnyWhere, AnyForm, AnyDevice, ...WebTone like DialTone
G. Sivakumar Computer Science and Engineering IIT Bombay [email protected]
Network Security and Surveillance
Internet Security OverviewDefence: Cryptography
Offence: RFIDs and SurveillanceSome Puzzles
Internet’s Dream
Why should a fridge be on Internet?
Will security considerations make this a nightmare?
G. Sivakumar Computer Science and Engineering IIT Bombay [email protected]
Network Security and Surveillance
Internet Security OverviewDefence: Cryptography
Offence: RFIDs and SurveillanceSome Puzzles
What are Cyber crimes?
Against People
Cyber Stalking and Harrassment(Child) Pornography
Against Property
CrackingVirus and SpamSoftware/Entertainment Piracy
Cyber Terrorism!
G. Sivakumar Computer Science and Engineering IIT Bombay [email protected]
Network Security and Surveillance
Internet Security OverviewDefence: Cryptography
Offence: RFIDs and SurveillanceSome Puzzles
Security Concerns
Match the following!Problems Attackers
Highly contagious viruses Unintended blundersDefacing web pages Disgruntled employees or customers
Credit card number theft Organized crimeOn-line scams Foreign espionage agents
Intellectual property theft Hackers driven by technical challengeWiping out data Petty criminalsDenial of service Organized terror groupsSpam E-mails Information warfare
Reading private files ...Surveillance ...
Crackers vs. Hackers
Note how much resources available to attackers.
G. Sivakumar Computer Science and Engineering IIT Bombay [email protected]
Network Security and Surveillance
Internet Security OverviewDefence: Cryptography
Offence: RFIDs and SurveillanceSome Puzzles
Cyber Terrorism?
Some examples from http://cybercrimes.net/
1989: Legion of Doom group took over the BellSouth telephonesystem, tapped phone lines, re-routed calls, ...
1996: A white supremacist movement took out a Massachusettsinternet service provider
1997: A cracker disabled the computer system of an airport controltower at the Worcester, Mass. Airport.
1997: a hacker in Sweden jammed the 911 emergency telephonesystem all throughout west-central Florida.
1998: NASA, Navy, and Defence Department computers wereattacked.
2000: in Maroochy Shire, Australia, a disgruntled consultant hackedinto a waste management control system and released millions ofgallons of raw sewage on the town.
2001: Two post-graduate students cracked a bank system used bybanks and credit card companies to secure the personalidentification numbers of their customers accounts. [38]
G. Sivakumar Computer Science and Engineering IIT Bombay [email protected]
Network Security and Surveillance
Internet Security OverviewDefence: Cryptography
Offence: RFIDs and SurveillanceSome Puzzles
Vulnerabilities
Application Security
Buggy codeBuffer Overflows
Host Security
Server side (multi-user/application)Client side (virus)
Transmission Security
G. Sivakumar Computer Science and Engineering IIT Bombay [email protected]
Network Security and Surveillance
Internet Security OverviewDefence: Cryptography
Offence: RFIDs and SurveillanceSome Puzzles
Denial of Service
Small shop-owner versus Supermarket
What can the attacker do?
What has he gained orcompromised?
What defence mechanisms arepossible?
Screening visitors usingguards (who looksrespectable?)VVIP security, but do youwant to be isolated?
what is the Internet equivalent?
G. Sivakumar Computer Science and Engineering IIT Bombay [email protected]
Network Security and Surveillance
Internet Security OverviewDefence: Cryptography
Offence: RFIDs and SurveillanceSome Puzzles
Security Requirements
Informal statements (formal is much harder)
Confidentiality Protection from disclosure to unauthorized persons
Integrity Assurance that information has not been modifiedunauthorizedly.
Authentication Assurance of identity of originator of information.
Non-Repudiation Originator cannot deny sending the message.
Availability Not able to use system or communicate when desired.
Anonymity/Pseudonomity For applications like voting, instructorevaluation.
Traffic Analysis Should not even know who is communicating withwhom. Why?
G. Sivakumar Computer Science and Engineering IIT Bombay [email protected]
Network Security and Surveillance
Internet Security OverviewDefence: Cryptography
Offence: RFIDs and Surveillance
References
Books
TCP/IP Illustrated by Richard Stevens, Vols 1-3,Addison-Wesley.Applied Cryptography - Protocols, Algorithms, and SourceCode in C by Bruce Schneier, Jon Wiley & Sons, Inc. 1996Cryptography and Network Security: Principles and Practiceby William Stallings (2nd Edition), Prentice Hall Press; 1998.Practical Unix and Internet Security, Simson Garfinkel andGene Spafford, O’Reilly and Associates, ISBN 1-56592-148-8.
Web sites
www.cerias.purdue.edu (Centre for Education and Research inInformation Assurance and Security)www.sans.org (System Administration, Audit, NetworkSecurity)cve.mitre.org (Common Vulnerabilities and Exposures)csrc.nist.gov (Computer Security Resources Clearinghouse)www.vtcif.telstra.com.au/info/security.html
G. Sivakumar Computer Science and Engineering IIT Bombay [email protected]