COOKIES AND PRIVACY:What do they do with our personal information?

Carla Ollé & Aida Pouladian

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1. What are Cookies? - Description

• Pieces of information provided by the users, as well as other data obtained from the browser

• Legitimate files that are installed on the user’s computers

• Small amounts of data that are send between server and browser

Cookies are:

2. Cookie’s purposes

• Simplify navigation• Improve user experience• Save time filling forms automatically, remembering

passwords and searches.• Carry out web analytics studies (statics, number of

visits…) to optimize the web• Adapt the content to every user profile (What they

are looking for?)• Make the user’s visit as personalized as possible• Understand better the audience

Cookies helps to:

3. What Cookies do?

What they do to achive their purposes?

Cookies track the user’s navigation keeping information to know about:

• Behaviour• Habits• Preferences: language, bookmarks…• Geolocalization: country, IP, …• Activity history and types of visits

4. Kind of CookiesTypes Names Behaviour Uses

Technical Cookies /

Own Cookies

Analysis Cookies

Temporary cookies. Are not stored and disappear

when the session ends.Analyze web traffic patterns

and audience analytics

Session cookies

Allow navigation and interaction with web pages

and users

Register, fill the shopping cart in an online shop,

identify the session

Third-party Cookies

Persistent cookies

Stored in the user's device and allow to retrieve

navigation information. You can delete them

Customize the sites through the user’s preferences

Personalized advertising

Zombie cookies

(Flash Cookies

Evercookies)

They recreated themselves after they are erased and are

stored in the device

It is a threat to user privacy. Retrieve information such as previous unique user ID and continue tracking personal

browsing habits.

5. Are cookies affect our privacy?Cookies can pose risks to privacy because they analyze the user browsing habits

6. Examples of persistent cookies

The purchase of a flightEncrypted information: IP, flight dates, nº passengers… Why? prevent spyware attacks or cookie theft

Persistent cookie: the date expires in 2021! Why? Saves preferences information for future connections:- Travel destination- Estimated prices- Interest on certain dates

Session cookies: allow to identify the session and fill the “shopping cart”

6. How we can protect ourselves?

We have three options:

THANKS FOR YOUR ATTENTION