YOUTUBE screened DIY videos of how to hack Facebook days after 50 million accounts were breached, including boss Mark Zuckerberg’s.

Several clips hosted on the Google-owned video-sharing site explained how users hack profiles.

It discussed stealing “access tokens” — a digital key allowing people to log in without passwords.

The videos had thousands of views plus comments that “it works”.

Facebook admitted hackers could use tokens to access apps linked with the website.

Cyber security expert Beau Woods said: “I’d say 50 million is maybe the tip of the iceberg.”

Google said it removes videos that encourage illegal activities.