Several correlated but not strictly identical changes happened over the same few months: scaling inference compute, heavier use of RL in post-training, and models producing reasoning tokens.
大多数人可能将AI进步归因于单一因素（如模型规模或数据量），但作者指出推理能力的提升是多种因素共同作用的结果，包括推理计算扩展、强化学习更广泛应用以及模型产生推理标记等。这挑战了人们对AI进步驱动因素的认知。
“Multi-factor authentication needs multi-factor enrollment,” noted Taku. It shouldn’t have been possible to enroll just using a stolen password. He listed numerous possibilities, among them credentials handed out in person, a one-time password, or a PIN sent to the employee’s registered email or mobile.
Whereas U2F only supports multi-factor mode, having been designed to strengthen existing username/password-based login flows, FIDO2 adds support for single-factor mode.
If you can unlink your address from a locked out account and then link it to a new account and add new 2FA factors to new account, and basically set it up again to be a replacement nearly identical to the original... how is that any different / more secure than just using a "reset account" feature that resets the original account (removes 2FA)?
We're still back to the recurring original problem with account security where the security of your account comes down to the security of your linked e-mail account.
Most platforms that require OTP verification for ensuring security are targeted at the mobile phone only. But some payment gaterways send OTP to email address also simultaneously to doubly ensure that you get the OTP and that you have requested the OTP. There could be some delay in SMS or email reaching you. Many OTPs are time restricted - you have to use them quickly.
We want to use the Doorkeeper gem to implement an OAuth provider in our app. However, we use 2 factor auth in the login process, so we need a way to modify the password grant to accept email, password and a 2fa token (and respond with an appropriate error if the 2fa token is required and missing).
me. We recommend using cloud-based TOTP apps such as: 1Password
Jinjarak, Y., Ahmed, R., Nair-Desai, S., Xin, W., & Aizenman, J. (2020). Pandemic Shocks and Fiscal-Monetary Policies in the Eurozone: COVID-19 Dominance During January - June 2020 (Working Paper No. 27451; Working Paper Series). National Bureau of Economic Research. https://doi.org/10.3386/w27451
Although it can be inconvenient, the two-factor authentication is the easiest and best way to keep your accounts from getting hacked. Whenever you log into an account from a new device, it will send an email or a text with a code that you input with your password.
Short of a fingerprint reader, two-step verification (aka two-step authorization) may be the single best way to protect online accounts.
2-Step Verification
If you're not already using 2-step verification, now is the time to enable it.
Two-factor authentication just shouldn't be optional anymore
This gives your users the option to increase the level of security to their account and help prevent unauthorized access.
Two-factor authentication, commonly abbreviated as 2FA, is any form of verification that requires two factors, like withdrawing money from an ATM using both a bank card and its PIN.