This lecture covers two topics: malicious software and the representation / processing of real numbers.

• Self-modifying code
• Buffer overrun on the stack and its exploitation
• The IEEE 754 standard for representing real numbers in two formats, single (32-bit) and double (64-bit) precision.
• The floating-point instructions.

• Software vulnerabilities and their exploitation
• The range-precision trade-off in real numbers
• Round-off: an ever present loss of precision in any code that deals with real numbers

• Go over the files, SMC1, SMC2, and IEEE in the Resource Directory
• Read pages 189-197, 206-207 of Section 3.6. If you have the old version of the textbook then read pages 275-280, 288, and 291 of Section 4.8