Lionel Barker
Lionel Barker is a retired electronic systems developer with approximately 40 years of experience in the industry. He recently raised concerns about the security of text message-based one-time passwords (OTPs) used in financial transactions, arguing that the system is outdated and vulnerable to interception due to its reliance on the Signalling System Seven (SS7) protocol, which lacks built-in security.
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Lionel Barker expressed concern about the common cases of credit card losses linked to phone e-wallets.
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