One of the important parts

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When is SMS A2F not enough? Every business has a unique threat model, so consider what your business protects and how your users might be targeted. Add additional security for high-value accounts (think financial accounts and emails) and high-value individuals (like celebrities, politicians, or activists) with: Authentication apps ( TOTP ) like Authy Push authentication , especially for businesses with a large number of mobile app users. Services like Sift to help detect fraud in the background. WebAuthn which is still new but a possible promising replacement for passwords. Email, which has different security tradeoffs but may be worth considering in addition to other channels and signals.

One of the important parts of every authentication system is account recovery. So philippines whatsapp number if you’re offering 2FA via SMS, consider how you want to use it in cases of lost passwords. We recommend using SMS in combination with backup codes or other possession channels to add even more protection for these accounts/users. For added security, consider adding forced wait periods and email notifications to indicate that recovery is in progress. For more recommendations, including how to balance account recovery with support costs, check out this talk on how to build customer account recovery in a 2FA world .



There’s no one-size-fits-all solution here, but I encourage you to delight your security-conscious users with secure channels and provide flexible options for those who aren’t. Because, as security researcher Cormac Herley says , “When you exaggerate all the dangers, you just train users to ignore you.”Whether you’re building your first product with Twilio or looking to expand your product offering, you need easy access to tools in the programming languages ​​or environments you use. Today, we’re excited to announce that we’re open-sourcing a beta OpenAPI specification for every Twilio API. We have a long history of supporting and maintaining libraries and helper tools in a few of the most popular languages ​​and environments used by developers.