http://mbpsd3akqyu2tk623cyaur2j7vblhstynbuyp6ck7ndxnqpoutqs2byd.onion/article/what-is-two-factor-authentication-(2fa)-be5a039da5ec
Users must verify at least one trusted phone number for mobile 2FA enrollment. 2. Platform Support Apple iOS, Google Android, and Windows 10 have 2FA-supporting apps. Duo Security, now owned by Cisco, offers a platform verifying both user and mobile device trustworthiness. 3.