In the past, it was noticed that through bulk SMSes, investors were induced to invest in or purchase the stocks of certain listed companies. Perpetrators of such fraud use various marketing techniques to attract subscribers on their social media channels. Although some channels have been removed, the curation process is considered opaque and insufficient by analysts. In the United States, Telegram's lower public profile has helped it mostly avoid high level scrutiny from Congress, but it has not gone unnoticed. Some privacy experts say Telegram is not secure enough
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