3 ms·

Can this also be weaponized? Get an innocuous image from someone you don't like, grab their GUID, add it to another image, sent it to the thin skinned politicia

Can this also be weaponized? Get an innocuous image from someone you don't like, grab their GUID, add it to another image, sent it to the thin skinned politician in power.

dbmnt 1mo ago
No, because the GU in GUID stands for globally unique. Adding it to a second image would cause a detectable collision. Also, C2PA, another technology mentioned in the article, means tampering is easily detected.
- chrisjj 1mo ago
  > Adding it to a second image would cause a detectable collision So? Still the weapon worked.
- janc_ 1mo ago
  Collision only detectable when you have both messages. Detecting a forgery seems more likely.
- joshheitzman 1mo ago
  It depends on which version of GUID it is. Only version 3 and 5 are hash based. The other versions are random, time, and/or MAC address based. Version 3 uses MD5 and its cheap to get the same hash for different images: https://crypto.stackexchange.com/questions/1434/are-there-two-known-strings-which-have-the-same-md5-hash-value https://crypto.stackexchange.com/questions/1434/are-there-tw...