🚨 Potential client-side DoS in Telegram

A Telegram group I own has been deliberately made completely inaccessible.

Every attempt to open the group causes the Telegram client to crash. The issue is reproducible on iOS, Android, Desktop and Web - the chat is completely inaccessible.

The group has not been deleted or banned. I am the owner, and the invite link is still valid.

I know who is behind the attack.

Based on the circumstances, I suspect that malicious content was deliberately placed in the group to trigger the client crash.

If this condition can be remotely triggered by specific content, an attacker could potentially make any Telegram group inaccessible by sending a specially crafted payload.

This makes the issue significantly more serious than an ordinary client crash.

@telegram - please investigate this urgently. I can provide the necessary details and evidence privately.

Affected group:
https://t.me/+u1wgBRqRZvMxNzgy