Telegram DDoS Attack – Messaging App Suffers 200GBps Pounding

The New Acunetix V12 Engine


For those not familiar before we get to the Telegram DDoS attack, Telegram is an instant messaging system focusing on privacy and multi-platform availability. It was launched by the founders of VK, the largest social network in Russia and is run as an independent non-profit company in Germany.

The client code is open-source and audited and various implementations can be found by various individuals based on the API.

Telegram DDoS Attack - Messaging App Suffers 200GBps Pounding

Just a few days ago, users in South East Asia were having difficulty accessing the service and Telegram announced they were suffering a huge DDoS attack.

Popular messaging platform Telegram has been hit with a 200Gbps distributed denial of service (DDoS) attack.

The Tsunami TCP SYN flood kicked off on Friday and hurt users in Asia, Australia, and Oceania, knocking out the service for some five percent of the company’s 60 million active users it has gained in 18 months.

It is a new form of DDoS attack discovered October by Radware security folk who say it is different from regular SYN floods in that it transmits large 100 byte packet sizes about double the regular 40 to 60 byte size.

That Radware says defeats many defense algorithms and quickly consumes bandwidth making even a modest attack clock some four to five gigabits per second.


It seems to be a slight variation of the regular SYN flood with a larger packet size that quickly consumes network resources.

With a 100,000 nodes involved the attack generating over 200GBps of bandwidth – it’s a fairly substantial attack.

The garbage traffic came from about a hundred thousand infected servers, most noticeably, in LeaseWeb B.V., Hetzner Online AG, PlusServer AG, NFOrce Entertainment BV, Amazon and Comcast networks,” Telegram says.

“That said, the attack was distributed evenly across thousands of hosts and none contributed more than five percent of the total volume … by now we know that the attack is being coordinated from East Asia.

“Attacks on the scale of the one we‘re facing today have become possible only recently and it’s the first time we‘ve met anything like this.”

The company says it did not want to discuss its mitigation measures in the event that it could give pointers to attackers unknown.

“Our sysadmin cyborgs are working on this 24 hours a day.”

The attack follows a bizarre smaller DDoS that followed a move by the company to introduce free custom stickers over the service.

It seems like no clear reason why Telegram is the target of this attack, some conspiracy theories claim it to be because of the free custom stickers – which other similar messaging apps make money from.

That seems a little far fetched though, we’ll keep an eye out and see if any more information emerges.

Source: The Register

Posted in: Networking Hacking


Latest Posts:


Malcom - Malware Communication Analyzer Malcom – Malware Communication Analyzer
Malcom is a Malware Communication Analyzer designed to analyze a system's network communication using graphical representations of network traffic.
WepAttack - WLAN 802.11 WEP Key Hacking Tool WepAttack – WLAN 802.11 WEP Key Hacking Tool
WepAttack is a WLAN open source Linux WEP key hacking tool for breaking 802.11 WEP keys using a wordlist based dictionary attack.
Eraser - Windows Secure Erase Hard Drive Wiper Eraser – Windows Secure Erase Hard Drive Wiper
Eraser is a hard drive wiper for Windows which allows you to run a secure erase and completely remove sensitive data from your hard drive by overwriting it several times with carefully selected patterns.
Insecure software versions are a problem Web Security Stats Show XSS & Outdated Software Are Major Problems
Netsparker just published some anonymized Web Security Stats about the security vulnerabilities their online solution identified on their users’ web applications and web services during the last 3 years.
CTFR - Abuse Certificate Transparency Logs For HTTPS Subdomains CTFR – Abuse Certificate Transparency Logs For HTTPS Subdomains
CTFR is a Python-based tool to Abuse Certificate Transparency Logs to get subdomains from a HTTPS website in a few seconds.
testssl.sh - Test SSL Security Including Ciphers, Protocols & Detect Flaws testssl.sh – Test SSL Security Including Ciphers, Protocols & Detect Flaws
testssl.sh is a free command line tool to test SSL security, it checks a server's service on any port for the support of TLS/SSL ciphers, protocols as well as recent cryptographic flaws and more.


3 Responses to Telegram DDoS Attack – Messaging App Suffers 200GBps Pounding

  1. Roman July 16, 2015 at 4:20 am #

    Telegram is considered to be “safe” from peeking by governments and other 3rd parties. East Asia – probably North Korea or China wanted to prevent their citizens at least temporarily from using the messaging service.

  2. moemon xi July 16, 2015 at 5:46 pm #

    Are there still people using Telegram?! All of my contacts have switched to Threema by now.

    • Darknet July 16, 2015 at 7:39 pm #

      Not sure where you’re from, but yah, it’s still pretty huge in Asia. And from my observations, the people using it don’t even know/care it’s security/privacy oriented. It’s just another WhatsApp to them.