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Vonny Gamot, from online protection company McAfee, recommended any affected customers should take immediate action such as changing passwords and enabling two-factor authentication on accounts that support it.

Currently, online services use a variety of ways to confirm people’s identities including video selfies, phone numbers, government-issued IDs and two-factor authentication.

Ground Game LA also accuses the offshoot group of hijacking Knock LA’s social media accounts and trying to lock the organization out of them, “including by changing the Two-Factor Authentication for Knock LA’s Instagram account, removing the administrator email on Knock LA’s Facebook account, and taking down multiple YouTube videos from Knock LA’s YouTube account.”

She was among the many customers asked to complete the login process by email using two-factor authentication to verify her identity.

Key precautions include using secure crypto wallets with two-factor authentication and being wary of too-good-to-be-true, high-yield investment schemes promising guaranteed returns.