Can Netflix detect screen recording? Why it goes black
Netflix mostly prevents screen recording rather than detecting it. Why protected video goes black, what still gets through, and what it means for courses.
Piracy & DRM
How DRM works, where it fails and what stops leaks
85 articles
Articles
What is HDCP? Screen mirroring, HDMI capture and your videos
What HDCP protects, why students see HDCP errors on projectors, why it doesn't stop every capture, and where mirroring rules clash with classrooms.
Camcording: when students film the screen with a phone
Nothing on a laptop can stop a phone camera pointed at it. Why camcording suits lecture piracy, why detection and watermarks struggle, and the law.
How to stop account sharing in your online courses
How shared logins spread through roommates, group buys, resale and forwarded OTPs, why device limits and password changes fall short, and what to ask.
How to prevent video downloads from your website
Most course video downloads use ordinary gaps: plain file links, download tools, keys any session can fetch and shared logins. What fails, the warning signs and what to ask.
Are unlisted YouTube videos safe for paid courses?
Unlisted hides a video from search, not from anyone with the link. What unlisted really means, how links leak, YouTube's rules on paid embeds, and when to move on.
Secure video hosting for online courses: what to look for
Where 'secure' video hosting falls short: keys any session can fetch, shareable links, untraceable copies, unchecked recording and lock-in, plus a vendor scorecard.
Signed URLs and hotlink protection for video, explained
How signed links and hotlink protection get bypassed: links shared before expiry, valid sessions, leaked secrets, public storage and faked Referer headers.
How do Netflix downloads work? Secure offline video
Netflix downloads are encrypted, app-only, device-bound and time-limited. How they work, why offline copies are a target, and what to ask before offering downloads.
Root, jailbreak and emulator detection: how apps do it
Why rooted phones, jailbreaks and emulators matter to video apps, how detection gets bypassed, why attestation isn't enough, and what to ask your app vendor.
DRM vs encryption: what's the difference?
All DRM uses encryption, but the two fail differently: captured keys, software-only devices, recording and shared logins. What each stops, and what to ask vendors.
Widevine L1 vs L3: security levels explained
Widevine L1 keeps keys in hardware; L3 keeps them in software and was publicly broken in 2019. Why that matters, why apps cap L3 quality, and what to ask.
Upclass for institutes
Launch your academy. Keep every course safe.
Your courses, live classes and tests in your own branded app, with piracy protection on every lecture. Plans start at ₹1,999/month.