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Object code
This term is applied to the compiled instructions contained within an executable file. Binary...
On-access scanner
An on-access scanner is a real-time virus scanner that scans disks and files automatically in the...
On-demand scanner
An on-demand scanner is a virus scanner the user starts manually. Most on-demand scanners allow...
Open Source
Any software whose source code is freely available for other people to look at and modify.
Operating system
The operating system (OS) is the underlying software that enables you to interact with the...
Overclock
This is when you purposely increase the sped of the frontside bus and CPU past advertised speeds...
Overwriting virus
An overwriting virus copies its code over its host file's data, thus destroying the original...

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