What is a Cookie?

A “cookie” is a tiny piece of data sent from a website and stored on a computer by the web browser. Cookies are used to track user activity, retain preferences, and enhance the user experience as they browse. Cookies can store information such as login credentials, shopping cart items, site preferences, browsing history, and more.

Cookies are used for several purposes:

• Session Management: Cookies can store session IDs to maintain user authenticationWhat is Authentication?Authentication is the process by which the identity of a user or system is verified. It ensures that the entity attempting to access a resource is who or… More during a browsing session.
• Personalization: Websites can customize content based on the user’s preferences that are stored in cookies.
• Tracking: Cookies are able to track user behavior and activities on a website, which can then be used for analytics and advertising purposes.
• Authentication: Cookies are used to remember login credentials and keep users logged in even across multiple sessions.
• Site Functionality: Cookies also store information about how a user interacts with a website, such as their language preferences or if they’ve added items to a shopping cart.

Although cookies can improve the browsing experience, they come with many privacy concerns, as they are used to track and collect user data. This has given rise to a range of data protectionWhat is Data Protection?Data protection refers to the practice of safeguarding sensitive information from unauthorized access, disclosure, alteration, or destruction. It involves implementing policies, procedures, and technologies to ensure that… More regulations in several countries that make it mandatory for websites to give users the option to manage their cookie preferences or opt-out of certain types of tracking.

Other privacy concerns include:

• Tracking: Cookies can be used to track users across all different websites, creating a thorough and detailed profile of their online behaviors. This information can then be used for targeted advertising or, in some instances, sold to third parties without the user’s consent or knowledge.
• Data Collection: Cookies are able to store all kinds of data, such as browsing history, login credentials, and personal preferences. This data can be accessed by websites and also shared with other parties, raising concerns about data security and unauthorized access.
• Third-Party Cookies: Many websites use third-party cookies, which are set by domains other than the one the user is visiting. These cookies can track users across multiple websites and are often used by advertisers to create comprehensive user profiles. While some regulations prohibit this without the user’s consent, not all countries have similar restrictions in place.
• Lack of Control: In many cases, users have limited control over the cookies that are set on their devices. While browser settings and privacy tools can help manage cookies to some extent, too often, users either don’t know how to manage these settings or don’t think about the issue, meaning that control is further eroded.
• Security Risks: There’s also the possibility that cookies can be exploited by bad actors to steal sensitive data or carry out phishingWhat is Phishing?Phishing is a type of cyberattack in which attackers send fraudulent communications, or direct people to counterfeit websites in order to trick those individuals into revealing sensitive information,… More attacks. Malicious cookies can track users’ keystrokes, capture login credentials, or install malwareWhat is Malware?Malware, a portmanteau of “malicious software,” constitutes a broad category of software specifically designed to infiltrate, damage, or disrupt computer systems, networks, and devices without the user’s consent… More on their devices.

Overall, while cookies play an important role in improving and personalizing online experiences, they also raise serious privacy concerns that need to be addressed through transparent data practices, user consent mechanisms, and robust privacy regulations.

You can learn more about internet-based security terms here.