How to Manage Cookies in Opera Browser for Better Privacy and Security

Web browsers have become essential tools in our daily lives, allowing us to access information, entertainment, and services online. However, as we browse the internet, websites deposit small files called cookies on our devices to store data about our visits and preferences. While cookies have benefits like keeping you logged in and remembering your settings, they also enable sites to track your browsing activity, raising privacy concerns.

As a cyber security expert with over a decade of experience protecting cloud data, I‘ve analyzed the cookie management capabilities of popular browsers. In this in-depth guide, I‘ll show you how to view, delete, and control cookies in the Opera browser to enhance your online privacy and security. I‘ll also provide research and statistics on browser tracking and compare Opera‘s handling of cookies to other browsers.

Understanding Browser Cookies

Cookies are small text files created by websites and stored on your device by your browser. They contain information like:

• Login credentials and session tokens
• Language and other site preferences
• Contents of your shopping cart
• Unique identifiers to track you across sites

Cookies allow sites to remember you and your settings, providing a more convenient browsing experience. However, the data collected by cookies enables sites and third parties to analyze your online behavior and interests.

First-Party vs Third-Party Cookies

There are two main types of cookies:

1. First-party cookies are set by the website you are visiting directly. They are generally used for essential functions like authentication, remembering settings, and analytics.

2. Third-party cookies are set by domains other than the site you‘re on, often for cross-site advertising and tracking. For example, if a site has a Facebook Like button, Facebook can set a cookie to track you.

Third-party cookies are more controversial from a privacy standpoint as they enable advertisers and other entities to compile detailed profiles of your browsing habits across multiple websites. According to a study by the University of Washington, third-party tracking cookies are present on 97% of popular websites.

Cookie Privacy Concerns

A Pew Research survey found that 79% of Americans are concerned about how companies use their data, and 59% have little or no understanding about what companies do with the data collected. Cookies play a big role in online data collection and tracking.

The data gathered by tracking cookies enables advertisers and data brokers to build detailed profiles about your interests, demographics, and behavior. This data is used for targeted advertising but can also be sold or leaked in data breaches. Privacy advocates argue that pervasive cookie tracking violates user privacy.

Viewing and Deleting Cookies in Opera

Opera provides several ways to view and clear the cookies stored by websites you‘ve visited. Regular cookie cleanups can reduce tracking and prevent sites from holding onto your data indefinitely.

Viewing Individual Cookies

To see a list of all cookies currently stored in Opera:

1. Click the red Opera icon in the top left corner
2. Select "Go to full browser settings"
3. Click "Privacy and security" on the settings sidebar
4. Under "Cookies and other site data" click the "See all cookies and site data" button

This will open a window listing all websites that have stored cookies, along with the number of cookies for each site. You can click on any site to view more details about its cookies:

• Cookie name
• Content of the cookie
• Domain the cookie belongs to
• Cookie expiration date
• Whether the cookie is accessible to other sites (SameSite)
• Whether the cookie is transmitted over secure HTTPS connection (Secure)

From the cookie details screen, you can delete any individual cookie using the trash icon to the right of it.

Clearing All Stored Cookies

To delete all cookies at once in Opera:

1. Go to Opera‘s settings menu
2. Under "Privacy and security" click the "Clear browsing data" button
3. Check the box for "Cookies and other site data"
4. Choose a time range like "All time" to delete all cookies
5. Click the "Clear data" button

This will immediately remove all stored cookies from Opera. Note that clearing cookies will sign you out of websites and delete any saved preferences.

Automatically Clear Cookies

Opera can be configured to delete all cookies every time you close the browser. To enable this:

1. Go to Opera settings
2. Under "Cookies and other site data" turn on the toggle for "Clear cookies and site data when you quit Opera"

Now anytime you fully quit Opera, it will wipe all cookies, minimizing tracking. However, you‘ll need to re-login to sites each time you relaunch the browser.

Adjusting Cookie Preferences

Opera provides granular controls for allowing or blocking cookies through the "Customize behaviors" settings. You can choose to:

• Allow all cookies (default)
• Block third-party cookies
• Block all cookies (not recommended)
• Keep cookies for specific sites
• Delete cookies when exiting browser

To access cookie preferences:

1. Go to Opera settings
2. Under "Cookies and other site data" click "Customize behaviors"
3. Use the toggles and fields to adjust your settings

The "Presets" option has three quick configurations:

1. Allow all cookies – Disables blocking and allows all sites to set cookies
2. Block third-party cookies – Prevents cross-site tracking cookies but allows site functionality
3. Block all cookies – Disables cookies entirely, may break many sites

Opera also supports adding exceptions for keeping or blocking individual site‘s cookies. In the "Customize behaviors" screen you can:

• Enter website URLs in "Sites that can always use cookies" to allow specific sites to set cookies
• Use "Always clear cookies when windows are closed for these sites" to automatically delete cookies for sites, useful for preventing tracking by invasive sites

Finding a Balance

Blocking all cookies can cause issues with logging in, preferences, and functionality on some sites. But allowing them enables tracking of your browsing habits.

I recommend blocking third-party cookies in Opera as a good compromise. This will prevent most advertising and tracking cookies while still allowing sites to function. Blocking all cookies is overkill for most users.

Opera‘s Built-In Ad Blocker

One standout feature of Opera is its integrated ad blocker. Blocking ads can help reduce the number of tracking cookies and improve page load speed. Opera‘s ad blocker uses the popular EasyList filter to identify and block ads.

To enable ad blocking in Opera:

1. Go to Opera‘s settings
2. Under "Basic" click "Block ads"
3. Toggle on "Block ads"
4. Select your preferred blocking level:
   • Optimal: Blocks most ads
   • Light: Blocks some ads for better site compatibility
   • Custom: Lets you specify which ad-blocking lists to use
5. Click "Reload page" to apply ad blocking on the current site

Opera‘s ad blocker can significantly cut down on intrusive ads and invisible trackers. A 2020 study found that ad blockers reduce tracking cookies by 40%.

Privacy Extensions for Opera

While Opera has good built-in cookie controls and ad blocking, privacy-focused browser extensions can provide an extra layer of protection against online tracking. Here are some popular extensions compatible with Opera:

• uBlock Origin – An efficient, open-source blocker for ads and trackers. It uses minimal CPU and memory while still blocking most ads.

• Ghostery – Blocks trackers and shows which companies are tracking you on each site. Ghostery‘s detailed tracking reports help visualize tracking.

• Privacy Badger – Automatically learns to block invisible trackers based on their behavior. Created by the Electronic Frontier Foundation.

• HTTPS Everywhere – Encrypts your communications with websites to protect against network eavesdropping and tampering.

These extensions complement Opera‘s privacy features to minimize tracking. However, they can occasionally cause websites to malfunction. Setting up whitelists for trusted sites can fix most issues.

A 2021 Princeton University study measured the effectiveness of various tracker blocking methods:

Blocking Method	Tracking Requests Blocked
Browser built-in settings	53.4%
Ghostery	55.3%
uBlock Origin	74.7%
Privacy Badger	10.6%
Browser + all extensions	91.0%

The results show that combining a browser‘s built-in protections with multiple tracker blocking extensions provides the strongest defense against online tracking. Opera‘s native cookie controls and ad blocking combined with extensions like uBlock Origin and Ghostery can minimize tracking.

Does Opera Sell User Data?

Many people are concerned about web browsers themselves tracking users and selling their data. Opera‘s privacy policy states that the company does not sell personal information. As a Norwegian company, Opera falls under Norway‘s strong privacy laws and the European Union‘s General Data Protection Regulation (GDPR).

Opera does collect some anonymized usage statistics to improve its products but allows users to opt-out. The company insists it only shares user data if legally compelled or given explicit permission by the user. This stance is more privacy-focused than some rival browsers.

In my analysis, Opera‘s built-in privacy protections and transparent policies make it one of the more trustworthy browsers from a privacy standpoint, particularly when compared to Google Chrome which has a business model heavily based on tracking users for advertising data.

Conclusion and Recommendations

In an online world that is increasingly invasive towards user privacy, web browsers have become an important frontline of defense against tracking and data collection. With a large portion of websites deploying cookies that track you across the internet, taking control of your browser‘s cookie settings is key to preserving your privacy.

Opera provides robust cookie management, ad blocking, and tracking protection features that compare favorably to other popular browsers. The ability to view and delete individual cookies, clear all cookies on exit, block third-party tracking cookies, and add exceptions puts you in the driver‘s seat. Combining Opera‘s settings with tracker blocking extensions maximizes privacy.

My expert recommendations for optimizing privacy in Opera:

1. Enable Opera‘s ad blocker and set it to the optimal level to limit cookies and improve speed
2. Go into Opera‘s cookie behavior settings and enable "Block third-party cookies"
3. Install trusted tracker blocking extensions like uBlock Origin or Ghostery
4. Periodically clear your cookies through Opera‘s clear browsing data tool
5. Add invasive/untrustworthy sites to the "Always clear cookies when windows are closed for these sites" list

While blocking cookies can sometimes break website functionality, finding the right balance for your needs is important. With Opera‘s accessible cookie controls, you can easily adjust between privacy and convenience. Taking a proactive approach to cookie management is the best way to limit intrusive online tracking and protect your data as you browse.