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Analyze differences between browsers

Open Internet Explorer and Firefox browser windows to the following two sites:
  1. Mozilla Developer Central
  2. Google Chrome
  1. How does msn.com display differently in Internet Explorer and Firefox?
  2. How does macromedia.com display differently in Internet Explorer and Firefox?

Do the sites load more quickly in one browser or the other? Look for changes in display colors and fonts.
Screen sizes or frames may be different as well.
  1. Which elements seem to keep a consistent format between browsers?
  2. Do HTML tags and tables look the same?
  3. Do graphic, audio, and video files load and appear the same way?
  4. Are the same plug-ins available and working?
If you can, try the same experiment on both Macintosh and Windows based computers.




The four major browsers (Internet Explorer, Firefox, Chrome and Safari) recently added private browsing modes to their user interfaces. Loosely speaking, these modes have two goals. First and foremost, sites visited while browsing in private mode should leave no trace on the user's computer.
A family member who examines the browser's history should find no evidence of sites visited in private mode. More precisely, a local attacker who takes control of the machine at time T should learn no information about private browsing actions prior to time T.
Second, users may want to hide their identity from web sites they visit by, for example, making it difficult for web sites to link the user's activities in private mode to the user's activities in public mode. We refer to this as privacy from a web attacker.
While all major browsers support private browsing, there is a great deal of inconsistency in the type of privacy provided by the different browsers.
Firefox and Chrome, for example, attempt to protect against a local attacker and take some steps to protect against a web attacker, while Safari only protects against a local attacker.