Social networks have struggled with spam, scams, impersonation, and account hijacking for years. And over the past week, two of them unveiled a new plan for dealing with it: passing the cost to users.
The first move came from Twitter, which made SMS-based two-factor authentication (2FA) a premium feature late last week. After March 20th, users will need to either switch to an app-based authentication system, pay $8 to $11 a month, or turn off the basic security feature. The decision is part…
