1. What are cookies and similar technologies?
Cookies are small text files placed on your device when you visit a website. They enable the website to recognize your browser and collect information such as your preferences or past activity. Similar technologies like pixels, scripts, tags, and device identifiers serve comparable purposes.
These tools help us to personalize content, ensure website functionality, enhance performance, and support marketing efforts. Throughout this notice, we refer to all of these technologies collectively as “cookies.”
2. Types of cookies we use
- First-party vs. third-party cookies
- First-party cookies are set directly by 51吃瓜 to operate our sites.
- Third-party cookies are set by service providers or partners, such as analytics platforms or advertising networks.
- Session vs. persistent cookies
- Session cookies expire once you close your browser.
- Persistent cookies remain active until manually deleted or until they reach their set expiration date.
3. Why do we use cookies?
Cookies play a crucial role in ensuring our websites operate smoothly and securely, while also enhancing user experiences. They support essential features like authentication and security, enable the delivery of targeted advertising, power analytics and insights, and contribute to overall site functionality and performance. Additionally, cookies may be involved in interactions with third-party websites and social sharing tools.
3.1 Login and authentication
Authentication cookies are specifically essential for the myciena website, as it requires users to enter their login credentials to access their accounts or restricted areas. These cookies help identify and verify users, allowing for secure login and maintaining active sessions as users navigate between pages. Without authentication cookies, users would need to re-enter their credentials on every page of myciena that requires a login to access available content, which would disrupt the user experience and reduce convenience.
3.2 Website protection
Security cookies protect websites and users from threats such as unauthorized access, fraud, or malicious attacks. They can detect unusual activity and enforce security measures, such as locking accounts after repeated failed login attempts on our myciena website. Security cookies can also help prevent cross-site request forgery (CSRF) attacks by verifying requests originate from authenticated users, block suspicious IP addresses, and enforce secure (HTTPS) connections to protect user data during transmission. These cookies are essential for maintaining the integrity and confidentiality of user data.
3.3 Advertising, marketing, and user insights
Advertising cookies gather information about users’ interests, helping deliver relevant advertisements and measure the effectiveness of marketing campaigns. These cookies also analyze user interaction with ads to optimize campaign targeting and improve content relevance. This allows us to reach the right audience while respecting user preferences.
3.4 User-tailored preferences
We use personalized cookies to enable core features of our website, such as language selection and other personalized settings. These cookies help us remember your preferences and choices, ensuring a seamless and tailored browsing experience every time you visit. Without these cookies, some features may not function properly, and your experience might not be as smooth or responsive as we would like it to be.
3.5 Analytics
Our analytics cookies help us better understand how you interact with our website. By collecting information like the pages you visit, the time you spend on our site, your navigation paths, and even page load times, we gain valuable insights into how we can improve. These cookies allow us to identify areas where we can optimize speed, reliability, and overall performance. With this data, we can make informed decisions to continuously enhance your experience and ensure our website meets your needs.
3.6 Third-party websites
Some cookies facilitate interactions with third-party websites or social media platforms, enabling features like sharing content or embedding external media. These cookies may collect data across sites, supporting services provided by external partners.
4. Classification of cookies and similar technologies
At 51吃瓜, we use the following classifications of cookies:
For each purpose described in sections 3.1–3.6, we rely on the legal basis applicable to the relevant cookie category set out below, depending on whether the cookies are essential or require user consent.
| Type of cookies | Purpose of use | Legal basis for processing |
|---|---|---|
| Essential cookies | Essential cookies enable you to navigate the website and to use its services and features. Without these necessary cookies, the website will not perform without errors, and we may not be able to provide the website or certain services or features. Essential cookies further allow us to maintain the safety and security of our website. |
|
| Targeted advertising | Advertising cookies are optional. They are set to display targeted promotions or advertisements based on your interests on the website or to manage our advertising. These cookies collect information about your activities on our website and other websites to provide you with targeted advertising. |
|
| Advertising cookies | Advertising cookies are optional. Advertising cookies are set to display targeted promotions or advertisements based upon your interests on the website or to manage our advertising. These cookies collect information about your activities on our website and other websites to provide you with targeted advertising. |
|
| Personalization | Personalization cookies are optional. They collect information about your choices and preferences, allowing us to remember language preference, user login details after a session, or other local settings, and customize the website accordingly. |
|
| Analytics cookies | These cookies help us understand how our website performs. They also track your use of the website to help us improve its performance, analyze website traffic, and evaluate advertising effectiveness. |
|
For users in the European Economic Area and the United Kingdom, we will only store or access information on your device via cookies or similar technologies where this is strictly necessary to provide a service you have explicitly requested, or where you have given your consent. Where the use of a cookie or similar technology involves processing of personal data, we also rely on a valid legal basis under the General Data Protection Regulation (GDPR) as outlined above.
For details about the specific cookies used on our websites, please refer to the disclosure information available on our cookie banner.
5. How can I change my preferences regarding the processing of the use of cookies?
You have control over your cookie preferences and can manage them by choosing either of the following:
- You can manage your cookie preferences, such accepting or refusing certain types of cookies, by using our Cookie Consent Manager to update your preferences at any time. Our Cookie Consent Manager can be found by navigating to the link labeled “Cookies” at the bottom of our website.
Please note: Disabling some cookies may affect website functionality and user experience. - You can also use the options and tools made available to you by your web browser.
- Your web browser: You can configure your browser so that it always rejects certain types of cookies or asks you each time whether you want to accept them or not. Your browser documentation includes instructions explaining how to enable, disable, or delete cookies at the browser level (usually located within the “Help,” “Tools,” or “Edit” facility).
- Clearing cache: You can manage and delete cookies and similar tracking technologies, such as local storage or device identifiers, at any time through your browser settings. While clearing cookies may remove some trackers, certain technologies (like local storage or IndexedDB) may persist unless you fully clear your browser’s site data or cache. To remove all forms of stored data, including cookies, local storage, and cached identifiers, we recommend clearing your browser’s site data, cookies, and cache. This can typically be done through the browser’s privacy or security settings. Note that this may log you out of other websites and reset your preferences.
If you manage cookies at the individual browser level, please remember that essential cookies will remain and cannot be turned off. Please also understand that choosing to reject non-essential cookies may reduce the performance and interactive features of our website.
6. Understanding your cookie preferences
Non-essential cookies that are already stored on your device are not deleted when cookie consent is revoked; however, the JavaScript that set those cookies has been blocked, so no new cookies will be placed going forward. If you wish to remove cookies that have already been stored, you can do so by clearing your browser’s cache and cookies.
Depending on your location and applicable privacy laws, you may be presented with a “Do Not Sell or Share” banner when visiting our website. If “Do Not Sell” is toggled on, the “Marketing” category is turned off (as though consent was revoked) and a signal is sent via the Interactive Advertising Bureau (IAB) framework to third-party advertisers.
The cookie consent banner, once interacted with, is not seen again for 12 months. However, we may display the banner again earlier if we make changes to the cookies we use (such as changes in purposes or vendors), or as otherwise required. You can retrigger it before that time by clearing your cache for “all time” or accessing the 51吃瓜 website via an incognito window or private window. Note that you can always change your cookie preferences at any time via our Cookie Consent Manager at the bottom of our page.
7. Third-party cookies and content
Some pages may include content from third-party providers (e.g., video platforms, social media widgets), which may set their own cookies. We encourage you to review their cookie and privacy policies.
8. Updates to this notice
We may revise this cookie notice to reflect changes in technology, legal requirements, or our practices. When we do, we’ll update the “Last Updated” date.
9. 51吃瓜 us
If you have questions about our use of cookies or this notice, you can contact us through our email at privacy@ciena.com.
Last updated: March, 11, 2026