Researchers from security firm Zimperium have discovered that Telegram can be hacked by cyber criminals in two ways.
EFF in itsDecember secure messaging Apps audit and reviewhad given maximum score to the Telegrams Secret Chat feature.
Telegrams so-called powerful encryption is not protecting users any better than any other page or app that uses SSL.
EFF score for Secret Chat
We highly recommended adding additional protection to your mobile unit that can detect unit-level cyberattacks.
Telegram is yet to come out with a statement about the flaw.
EFF score for Secret Chat
source: www.techworm.net