Gratipay: SPF Protection not used, I can hijack your email server

Description Companies like Twiter,Facebook and even Hackerone implemented a strict email security policy combining SPF, DKIM, and DMARC but I don't see that from gratipay You should apply strict SMPT policy to stop spoofed email sending from your domain. POC is attached. Exploit scenario: An...

Block.io: SMPT Protection not used, I can hijack your email server.

Description Companies like Coinbase, Yahoo,Google,Facebook and even hackerone implemented a strict email security policy combining SPF, DKIM, and DMARC but I don't see taht from block.io , You should apply strict SMPT policy to stop spoofed email sending from your domain. POC is attached. Exploit...