For example, WhatsApp restricted the number of times a user could forward something, and developed automated systems that detect and flag objectionable content. Although some channels have been removed, the curation process is considered opaque and insufficient by analysts. In the past, it was noticed that through bulk SMSes, investors were induced to invest in or purchase the stocks of certain listed companies. Pavel Durov, Telegram's CEO, is known as "the Russian Mark Zuckerberg," for co-founding VKontakte, which is Russian for "in touch," a Facebook imitator that became the country's most popular social networking site. Some privacy experts say Telegram is not secure enough
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