Some thoughts by nostr:nprofile1qqstgy9c8cmmxadu3uax4j3al5cf6fw6gkgfc2pjelg2jqj5ptzzseqpz4mhxue69uhhyetvv9ujumt0wd68ytnsw43qzxmhwden5te0v4cxsetdv4ex2mrp0yhx6mmnw3ezuur4vgq3jamnwvaz7tmjv4kxz7fwwd5xjarxdaexxefwdahx2svrdwz  on the Stanford report (which he co-authored):

"Traditionally the solution here has been to defederate from freezepeach servers and...well, all of Japan."

"CSAM-scanning systems work one of two ways: hosted like PhotoDNA, or privately distributed hash databases. The former is a problem because all servers hitting PhotoDNA at once for the same images doesn't scale. The latter is a problem because widely distributed hash databases allow for crafting evasions or collisions."

https://hachyderm.io/@det/110782896527254991