Security Vulnerability - Flock 表示约 3% 的执法部门客户未使用多因素身份验证 [1] - 这可能导致数十个执法机构账户面临风险，容易受到攻击和不当访问 [1]

There are many different proof-of-human mechanisms that you can layer on top of each other. They have different and hence complementary failure modes.Use as many as you can cheaply introduce. From 2FA to MFA, multi-factor authentication.Steven Sinofsky (@stevesi):@balajis How do you solve the realID and association with an account problem (in case authentication is breached)? Or does this depend on algorithmic determination of bot'ness? ...