Analyzing Computer Security: A Threat / Vulnerability / Countermeasure Approach

16. ‘Twas Brillig, and the Slithy Toves ...

Chapter Spotlight

• Incorrect data modification: sequencing, substitution, salami, and similarity errors

• Error correction and detection codes

• Redundancy, backups, mirroring

• Cryptographic chaining

Attack: Grade Inflation 663

Threat: Data Corruption 664

Countermeasure: Codes 667

Countermeasure: Protocols 668

Countermeasure: Procedures 669

Countermeasure: Cryptography 670

Conclusion 673

Exercises 674

Of the three goals of computer security—confidentiality, integrity, and availability—confidentiality receives the most attention: People want to be sure their financial, school, and medical data are not disclosed inappropriately, companies want to protect their intellectual property, and governments ...