Types of security issues in computing

What can take your computer from your control? Broadly, we can establish these categories:

Infiltration (people breaking in)
- Physical access
- Breaking passwords
- Unrestricted network access / wardriving
- Viruses and worms
Eavesdropping (people taking or intercepting data from it)
- Network snooping
- Keystroke loggers
- Digging through logfiles, browser caches, etc.
- Recovering deleted files, email, etc
Social engineering (people tricking you into compromising your security)
- Phishing
- Trojans and untrusted binaries
Data loss (your computer actually failing for various reasons)
- Media failure
- Software obsolescence