Messaging service provider Telegram said on Wednesday it has stabilised its systems after a “powerful” distributed denial-of-service (DDoS) attack.

Telegram, which has more than 200 million users, had said earlier users in the US and other countries may experience connection issues.

“For the moment, things seem to have stabilised”, the company said in another tweet nearly an hour after it acknowledged the attack.

Outage tracking website Downdetector.com showed that users in the US and Brazil were the most affected.

In DDoS attacks, hijacked or virus-infected computers are used to target websites.