Cybersecurity executives blamed YouTube’s continued use of multifactor authentication and relying on user credentials instead of more advanced forms authentication as the reasons behind why millions of accounts were hijacked over the last few days.
The attackers used phishing attacks that convinced account owners to give up their Google account login credentials, used that information to enter the accounts and then re-assigned them to new owners, ZDNet reported. Next the malicious actors changed the channel's vanity URL so the legitimate owners never realized their account was hijacked.
The attackers were also able to bypass the two-factor authentication required for each account, most likely by using a tool like Modlishka, said Rosemary O’Neill, Director of Customer Delivery, for NuData Security, a Mastercard company.
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