Web cookies (also called HTTP cookies, browser cookies, or simply cookies) are small pieces of data that websites store on your device (computer, phone, etc.) through your web browser. They are used to remember information about you and your interactions with the site.
Purpose of Cookies:
Session Management:
Keeping you logged in
Remembering items in a shopping cart
Saving language or theme preferences
Personalization:
Tailoring content or ads based on your previous activity
Tracking & Analytics:
Monitoring browsing behavior for analytics or marketing purposes
Types of Cookies:
Session Cookies:
Temporary; deleted when you close your browser
Used for things like keeping you logged in during a single session
Persistent Cookies:
Stored on your device until they expire or are manually deleted
Used for remembering login credentials, settings, etc.
First-Party Cookies:
Set by the website you're visiting directly
Third-Party Cookies:
Set by other domains (usually advertisers) embedded in the website
Commonly used for tracking across multiple sites
Authentication cookies are a special type of web cookie used to identify and verify a user after they log in to a website or web application.
What They Do:
Once you log in to a site, the server creates an authentication cookie and sends it to your browser. This cookie:
Proves to the website that you're logged in
Prevents you from having to log in again on every page you visit
Can persist across sessions if you select "Remember me"
What's Inside an Authentication Cookie?
Typically, it contains:
A unique session ID (not your actual password)
Optional metadata (e.g., expiration time, security flags)
Analytics cookies are cookies used to collect data about how visitors interact with a website. Their primary purpose is to help website owners understand and improve user experience by analyzing things like:
How users navigate the site
Which pages are most/least visited
How long users stay on each page
What device, browser, or location the user is from
What They Track:
Some examples of data analytics cookies may collect:
Page views and time spent on pages
Click paths (how users move from page to page)
Bounce rate (users who leave without interacting)
User demographics (location, language, device)
Referring websites (how users arrived at the site)
Here’s how you can disable cookies in common browsers:
1. Google Chrome
Open Chrome and click the three vertical dots in the top-right corner.
Go to Settings > Privacy and security > Cookies and other site data.
Choose your preferred option:
Block all cookies (not recommended, can break most websites).
Block third-party cookies (can block ads and tracking cookies).
2. Mozilla Firefox
Open Firefox and click the three horizontal lines in the top-right corner.
Go to Settings > Privacy & Security.
Under the Enhanced Tracking Protection section, choose Strict to block most cookies or Custom to manually choose which cookies to block.
3. Safari
Open Safari and click Safari in the top-left corner of the screen.
Go to Preferences > Privacy.
Check Block all cookies to stop all cookies, or select options to block third-party cookies.
4. Microsoft Edge
Open Edge and click the three horizontal dots in the top-right corner.
Go to Settings > Privacy, search, and services > Cookies and site permissions.
Select your cookie settings from there, including blocking all cookies or blocking third-party cookies.
5. On Mobile (iOS/Android)
For Safari on iOS: Go to Settings > Safari > Privacy & Security > Block All Cookies.
For Chrome on Android: Open the app, tap the three dots, go to Settings > Privacy and security > Cookies.
Be Aware:
Disabling cookies can make your online experience more difficult. Some websites may not load properly, or you may be logged out frequently. Also, certain features may not work as expected.
As a McNair Scholar and Honors Chemical Engineering student, Shihao Zhai has exemplified the highest standards of scholarship and commitment to the field. Throughout his undergraduate years, Shihao's contributions to our department and the broader community have been invaluable. As he embarks on the next phase of his career, we wish him continued success, growth, and fulfillment. Click here to check out the UConn Today article highlighting this phenomenal graduate.
The first cohort to receive the SPARK funding has reported significant advancements in their products and concepts. UConn CBE Professor Luyi Sun, a researcher of high-performance nanocoatings, was among the recipients of this funding. It's inspiring to see how this funding has helped to accelerate the developent of cutting-edge technologies. Congratulations to all recipients! To read more about this funding program, click here.
World-renowned surgeon and scientist, Dr. Cato Laurencin, has founded a new startup to help humans regrow limbs. With over 30 years of experience in the field of regenerative engineering, Dr. Laurencin is leading the charge in developing cutting-edge technologies to restore lost limbs and enhance the body's natural healing abilities. We are thrilled to see such groundbreaking research taking place right here in the UConn Chemical & Biomolecular Engineering Department! To read more about this research, please click here.
The University of Connecticut has established The Cato T. Laurencin Institute for Regenerative Engineering, a new cross-campus institute focused on innovative approaches in medicine, science, engineering, and technology. We are thrilled that this new institute is named in honor of Cato T. Laurnecin, our distinguished professor in the Department of Chemical & Biomolecular Engineering and a leading figure in the field of regnerative engineering. Congratulations to Professor Laurnecin on this exciting new venture! To read more about the institute and Dr. Laurencin's research in regenerative engineering, click here.