What are Cookies on the Internet? Everything You Need to Know

Not all cookies are created equally, and while many are harmless, some can be used for invasive tracking or even malicious purposes. Here’s what you need to know about their safety:

• First-party cookies (safe in most cases): These come directly from the website you’re visiting. They’re typically used to enhance the website’s functionality, like keeping you logged in or remembering your preferences. 

• Third-party cookies (more concerning): These are created by a domain other than the site you’re visiting. They’re often used by advertisers to track your behavior across multiple websites—as such, they tend to raise privacy concerns. 

• Malicious cookies (rare): Although rare, harmful cookies can be used by cybercriminals to track your activity or steal personal information. This is why it’s essential to keep your browser and security settings up to date.

So, should you accept all cookies?

If a website asks for consent to cookies, it’s usually a good sign that they’re adhering to legal standards like GDPR or CCPA, which aim to protect your data privacy. Here’s what we recommend:

• Accept cookies from trusted sites to enjoy their full functionality (e.g., your bank or favorite e-commerce platform). 

• Be cautious with third-party cookies, especially on unfamiliar or suspicious websites. 

• Always review a site’s cookie policy if you’re unsure what data they’re collecting. 

How do Cookies compare to caches and local storage?

Cookies are often confused with other browser storage methods like cache and local storage, but they serve different purposes.

• Cookies: Small text files used to store user-specific information like session IDs, preferences, and tracking data. They are sent back to the server with every request, which can impact performance.

• Cache: Stores larger files like images, CSS, and JavaScript files to speed up website loading times. The goal is performance, not storing user data. When you revisit a site, your browser can load these files from the cache instead of re-downloading them.

• Local Storage: A more modern and robust storage method. It can hold much more data than cookies (around 5-10 MB), and the data isn't sent to the server with every request. It's often used for storing application states or user data for offline use.

Think of it this way: cookies are like a name tag, the cache is like a photo album of the site, and local storage is like a personal notebook for the website to use on your device.