Threema is a Swiss encrypted messaging application. It has more than 10 million users and more than 7000 on-premise customers. Prominent users of Threema include the Swiss Government and the Swiss Army, as well as the current Chancellor of Germany, Olaf Scholz. Threema has been widely advertised as a secure alternative to other messengers.
In our work, we present seven attacks against the cryptographic protocols used by Threema, in three distinct threat models. All the attacks are accompanied by proof-of-concept implementations that demonstrate their feasibility in practice.
With the ongoing war in Ukraine, in the Polish cyberspace, there are more and more occurrences classified as computer incidents, including attacks perpetrated by Russian hackers. This is a response of the Russian Federation to the Poland’s support provided to Ukraine and an attempt to destabilise the situation in our country.
US officials and allies have warned about attacks from XakNet and related groups.
We recently began scanning for middlebox devices that are vulnerable to Middlebox TCP reflection, which can be abused for DDoS amplification attacks. Our results are now shared daily, filtered for your network or constituency in the new Vulnerable DDoS Middlebox report. We uncover over 18,800,000 IPv4 addresses responding to our Middlebox probes. In some cases the amplification rates can exceed 10,000!
The hacker group Killnet claimed the attacks against Italy. How it's possible to detect the activities of the Mirai botnet used through Falco
A new reflection/amplification distributed denial of service (DDoS) vector with a record-breaking potential amplification ratio of 4,294,967,296:1 has been abused by attackers in the wild to launch multiple high-impact DDoS attacks.
ESET researchers uncover IsaacWiper, a new wiper that attacks Ukrainian organizations and HermeticWizard, a worm spreading HermeticWiper in local networks.
