Japan’s NICT（National Institute of Information and Communications Technology） and collaborators evaluated the security of Nostr and proposed countermeasures. The results will be presented at Black Hat USA 2025 and IEEE EuroS&P 2025. Title: Not Sealed: Practical Attacks on Nostr, a Decentralized Censorship-Resistant Protocol https://www.blackhat.com/us-25/briefings/schedule/index.html#not-sealed-practical-attacks-on-nostr-a-decentralized-censorship-resistant-protocol-45726 #grownostr