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Slackware-13.37-Hacks-Opera Hardening

Posted 08-27-2011 at 06:04 PM by arniekat

Opera 11.50 Web Browser Hardening

These are the settings I use on Opera, however you may go more stricter or looser with your security settings depending on your needs.

The current version available from is Opera-11.50. After repackaging with the SlackBuild and installing Opera, run the application and do the following:

Click Opera Menu (Upper Left-Hand Corner) > Settings > Preferences OR CTRL+F12

General Tab > Startup "Start with a Home Page"
General Tab > Home Page "Enter your favorite home page"
I change it from "Continue from last time" since this setting will save the last webpage you visited. I prefer to start from scratch on my own Home Page.
General Tab > Choose how you prefer to handle popups > Block unwanted popups DEFAULT
You can also have all popups blocked.

Forms Tab > Enable Password Manager UNCHECK
Forms Tab > Auto-Fill Forms NO INFORMATION

Advanced Tab > Content > JavaScript Options > Allow Resizing Of Windows UNCHECK
Advanced Tab > Content > JavaScript Options > Allow Moving Of Windows UNCHECK
Advanced Tab > Content > JavaScript Options > Allow Script To Hide Address Bar UNCHECK
This keeps bad websites from using JavaScript to create Windows that are impossible to get rid of.

Advanced Tab > History > Remember visited addresses for history and autocompletion 0
Advanced Tab > History > Hit the CLEAR button to clean-out the History
Advanced Tab > History > Remember content on visited pages UNCHECK
Advanced Tab > History > Disk Cache > Empty On Exit CHECK
Advanced Tab > History > Hit the EMPTY NOW button to clean out the disk cache
Advanced Tab > History > Check if cached page is updated on the server > Check documents > Never
Advanced Tab > History > Check if cached page is updated on the server > Check images > Never

Advanced Tab > Cookies > Never accept cookies CHECK
Advanced Tab > Cookies > Click the Manage Cookies button and delete any cookies that are there

When you are on a website that requires cookies, you will get a message:

"Cookies must be enabled to message you correctly! Enable Cookies and reload the page."

If you need to allow cookies, then change the settings to:

Advanced Tab > Cookies > Accept cookies only from the site I visit CHECK
Advanced Tab > Cookies > Ask me before accepting cookies CHECK

Now, when you visit a webpage that needs to use cookies, you will get a dialog box asking you whether to Accept or Refuse cookies. Two additional options are:

Force Deletion When Exiting Opera
Remember my choice for all cookies for this domain CHECK

Advanced Tab > Security > Auto-update > Do not check for updates

Since Opera is repackaged with a SlackBuild manually, I end up checking manually for a new Opera version.

Advanced Tab > Network > Enable Geolocation UNCHECK

This keeps websites from finding out your location.

Hit OK when you are done.

Here is how you Delete Private Data in Opera:

Click Opera Menu (Upper Left-Hand Corner) > Settings > Delete Private Data
Click the "Detailed Options" drop-down button

Delete Session Cookies CHECK
Delete All Cookies CHECK (Note-Will not delete cookies you have saved!)
Delete Password Protected Pages And Data CHECK
Delete Entire Cache CHECK
Clear History Of Visited Pages CHECK
Clear History Of Downloads CHECK
Clear Bookmark Visited Time CHECK
Clear All Email Account Passwords CHECK
Clear Password Manager CHECK
Delete Persistent Storage CHECK
Close All Tabs CHECK
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