News for hackers. Stuff that matters.
Re:What's Inside the EU Green Pass QR Code? by nousermane on Tuesday June 22, 2021 @06:56AM (#27590116)
Digital signature would prevent that (assuming scanner does a good job at verifying one). "Looking at the hexdump" section of TFA, last 64 bytes (cyan-coloured).

On top of that, online verification (e.g. by certificate ID) might be possible, too.

Re:What's Inside the EU Green Pass QR Code? by thierryzoller on Tuesday June 22, 2021 @09:55AM (#27591640)
Yeah, didn't fine the hash in that JSON