Telegram which has now crossed 600 million users said in a statement that Messages will be imported into the current day but will also include their original timestamps.
The hacking group has used multiple platforms to communicate with potential targets, including Twitter, LinkedIn, Telegram, Discord, Keybase and email.
Encryption is fundamentally flawed and once hackers get to know any vulnerability or bug in the whole data travel journey apps, mobile operating system, public Wi-Fi, Cloud and the physical data centres your personal
These new users came from across the globe -- 38 per cent from Asia, 27 per cent from Europe, 21 per cent from Latin America and eight per cent from MENA (Middle East and North Africa).
"Imagine dozens of employees working on just that full-time. I am happy to save Facebook tens of millions of dollars and give away our secret for free: respect your users," he said in a statement.