[feupan]

https://support.google.com/youtube/answer/9230970?hl=en

[rkagerer]

What's the difference between the old and newer, more secure URL's for unlisted videos? eg. More entropy?

[Dylan16807]

Any entropy at all. Supposedly the old ones were an encrypted counter, so if that key had gotten loose it would have been bad.

[londons_explore]

The key did get loose. Thousands of engineers had access to it and it showed up on dark corners of the internet for sale. A bunch of my unlisted videos got more view counts than they ought to have had, so I think abuse of it was pretty widespread.

[fshbbdssbbgdd]

Probably a bunch of people got promoted for making the new URL and nobody was going to get promoted for maintaining the old one