The users of applicationmacOS Telegram messaging apps are warned of potential privacy issues that could expose files shared with other users.

According to research του Reegun Richard Jayapaul, που είναι lead threat architect στη Trustwave SpiderLabs, the delete feature in the privacy-focused app can be bypassed and keep files permanently.

The first issue was that all multimedia files sent via Telegram were stored in a cache, even after a message self-destructed.

That means one hacker could still access those files, (audio, video, shared locations or documents), according to Jayapaul. It's also the second time this year that a researcher found that files were not effectively deleted when deleting conversations on the Telegram app.

A second issue that Telegram also did not fix by deleting the messages is that it allows the hacker to bypass the security of the device by simply stealing a file from the cache folder without the recipient ever opening it.

This could, of course, be done by taking screenshots or recordings, although entering the cache shows the sender that the recipient has not read the message, leaving him or her completely ignorant.

«Με τη βοήθεια των ερευνητών, συνεχίζουμε να βελτιώνουμε τη λειτουργικότητα και την ασφάλεια των χαρακτηριστικών όπως αυτό", ανέφερε χαρακτηριστικά η Telegram.