Despite Telegram's origins, its approach to users' security has privacy advocates worried. Some privacy experts say Telegram is not secure enough In this regard, Sebi collaborated with the Telecom Regulatory Authority of India (TRAI) to reduce the vulnerability of the securities market to manipulation through misuse of mass communication medium like bulk SMS. Although some channels have been removed, the curation process is considered opaque and insufficient by analysts. Individual messages can be fully encrypted. But the user has to turn on that function. It's not automatic, as it is on Signal and WhatsApp.
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