Data Usage Policy

Tracking technologies are small pieces of data that get stored on your device or browser when you visit our website. Think of them as digital sticky notes that remember things about your visit—like which language you prefer, whether you're logged in, or which course you were last viewing. Some of these technologies are essential for the platform to work at all, while others help us make your experience better over time.

We use several categories of tracking technologies on Kkaldex. Essential trackers keep the site functioning—without them, you couldn't log into your account, navigate between lessons, or submit assignments. Functional trackers remember your preferences so you don't have to reset your video quality or theme choice every time you visit. Analytics trackers help us understand patterns, like which course materials students find most helpful or where people get stuck in the signup process. And customization trackers let us show you relevant content, like suggesting courses similar to ones you've completed.

For core website functionality, we need to track things like your session state. When you log in to access your courses, we store an authentication token so you don't get logged out every time you click to a new page. Similarly, when you're taking an assessment, we need to remember your answers as you move between questions. In my experience working with educational platforms, students get understandably frustrated when technical glitches cause them to lose progress—these essential trackers prevent that.

Functional enhancements make your experience more personalized without being strictly necessary. If you adjust the playback speed on video lectures, we remember that preference. If you choose to view the dashboard in list view instead of grid view, we save that choice. When you select dark mode for late-night studying sessions, that setting persists across your visits. These improvements rely on storing small pieces of information about your preferences.

Our analytics technologies help us understand aggregate patterns across all users. We track which features get used most frequently, where students spend the most time, and which pages have high bounce rates. This data is invaluable for improving the platform—if we notice that most students abandon a particular lesson halfway through, that tells us something might be confusing or broken. We look at trends across thousands of users rather than focusing on any individual's behavior.

We also use some targeting and customization features to make content more relevant. After you complete a programming course, we might suggest related courses in web development or data science. If you frequently access materials about educational psychology, we'll highlight new content in that area. The goal isn't to manipulate your choices but to save you time by surfacing content that matches your demonstrated interests.

You have significant control over tracking technologies, and privacy regulations in many jurisdictions explicitly grant you rights to manage this data. We respect your preferences, though we should be honest that disabling certain trackers will affect how well the platform works for you. It's a balance between privacy and functionality that each person needs to strike for themselves.

Most modern browsers give you tools to manage tracking preferences. In Chrome, you can find these options under Settings → Privacy and Security → Cookies and other site data. Firefox puts them under Options → Privacy & Security. Safari users should look in Preferences → Privacy. You can block all trackers, allow only essential ones, or configure custom rules for specific websites. Just keep in mind that blocking everything will likely break login functionality and personalization features.

We've built a preference center directly into the Kkaldex platform where you can make granular choices about different tracking categories. You'll find it in your account settings under Privacy Preferences. There you can toggle off analytics tracking while keeping functional trackers enabled, or disable personalization while allowing essential session management. We save these preferences and honor them across all your visits.

Disabling different categories of tracking has varying consequences. Turn off essential trackers and you won't be able to log in or maintain a session—the site simply can't function without knowing who you are. Disable functional trackers and you'll need to reset your preferences each visit, manually adjusting video quality and theme settings every time. Block analytics and you won't affect your own experience at all, though you'll stop contributing to the aggregate data that helps us improve the platform. Turning off customization means you'll see generic course recommendations instead of personalized suggestions based on your learning history.

Several third-party tools can help you manage tracking across all websites you visit. Browser extensions like Privacy Badger, uBlock Origin, and Ghostery block many tracking technologies automatically. These tools work well if you want a set-it-and-forget-it approach to privacy, though they occasionally break website functionality in unexpected ways. We've tested our platform with common privacy extensions and addressed most compatibility issues, but you might still encounter occasional hiccups.

Finding the right balance between privacy and functionality depends on your personal priorities and how you use the platform. A student who logs in daily to watch lectures and complete assignments will want to keep functional trackers enabled for a smooth experience. Someone who occasionally browses our free content might prefer blocking everything except essential trackers. We've designed the site to degrade gracefully when tracking is limited, so you can experiment with different settings to find what works for you.

Different types of data have different retention periods based on their purpose and legal requirements. Essential session data gets deleted when you log out or after a period of inactivity—typically 24 hours for inactive sessions. Functional preference data persists until you clear it or change your settings, sometimes for years if you remain an active user. Analytics data is usually aggregated and anonymized after 26 months, with individual identifiers removed. Course progress and assignment data remains accessible throughout your enrollment and for seven years afterward for academic record purposes. When data reaches the end of its retention period, we have automated processes that permanently delete it from our systems and backups.

We've put technical and organizational safeguards in place to protect collected data. Our servers use encryption both for data in transit and data at rest. Access to user data is restricted to employees who need it for their work, and all access is logged for audit purposes. We conduct regular security assessments and penetration testing to identify vulnerabilities. On the organizational side, employees receive privacy training, we maintain incident response procedures, and we've appointed a team responsible for data protection compliance.

The tracking data we collect sometimes gets combined with information from other sources to provide better service. When you create an account, you provide profile information like your name and email address. That gets linked with your usage patterns from tracking technologies to create a complete picture of your learning journey. If you enroll in a course through a partner institution, we might receive educational records that we combine with our own data about your progress. This integration happens only when necessary to provide the service you've requested and only with appropriate safeguards.

We work to comply with applicable privacy regulations including GDPR in Europe, CCPA in California, and FERPA for educational records in the United States. These frameworks give you rights like accessing your data, correcting inaccuracies, requesting deletion, and objecting to certain processing activities. We've built systems to honor these rights efficiently. Our approach to compliance goes beyond checking legal boxes—we're genuinely trying to handle data responsibly even in jurisdictions without strict privacy laws.

Students under 18 and users from educational institutions receive additional protections. We don't show targeted advertising to minors. For institutional partners like schools and universities, we act as a service provider processing data according to their instructions and applicable educational privacy laws. We don't use student data for commercial purposes unrelated to education. Parents and guardians can request information about data we've collected from their children, and institutional administrators can manage privacy settings for their student users.

We review this policy at least annually and update it whenever we make significant changes to our tracking practices. Technology evolves quickly, and we sometimes add new features or partners that require policy updates. We also revise the policy in response to new privacy regulations or when we identify ways to explain our practices more clearly. You can expect minor clarifications and updates periodically, with major revisions happening less frequently—probably every year or two as our platform grows.

When we update this policy, we'll notify users through multiple channels. You'll see a banner on the website highlighting the changes for at least 30 days after publication. We'll send an email to your registered address explaining what changed and why it matters. For users who check in infrequently, we show a notification about policy updates when you next log in. These notifications include a summary of key changes so you don't have to read the entire document again unless you want to.

We maintain a version history showing previous versions of this policy with their effective dates. You can access historical versions through a link at the bottom of this document. Each version includes a change log highlighting what was modified since the previous version. This transparency helps you understand how our practices have evolved over time and lets you refer back to the terms that were in effect when you first signed up.

Significant changes to this policy—particularly those that expand what data we collect or how we use it—might require your renewed consent. If we start using tracking data for materially different purposes than originally disclosed, we'll ask you to review and accept the new terms before continuing to use the platform. Examples of changes that would trigger new consent include adding advertising partners, sharing data with new categories of third parties, or collecting sensitive information we didn't previously gather. Minor clarifications and legally required updates typically don't require re-consent.