In December 2021, Sebi officials had conducted a search and seizure operation at the premises of certain persons carrying out similar manipulative activities through Telegram channels. Some privacy experts say Telegram is not secure enough Sebi said data, emails and other documents are being retrieved from the seized devices and detailed investigation is in progress. Despite Telegram's origins, its approach to users' security has privacy advocates worried. Friday’s performance was part of a larger shift. For the week, the Dow, S&P 500 and Nasdaq fell 2%, 2.9%, and 3.5%, respectively.
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