Hacking group used 11 zero-days to attack Windows, iOS, Android users

Project Zero, Google’s zero-day bug-hunting team, discovered a group of hackers that used 11 zero-days in attacks targeting Windows, iOS, and Android users within a single year. The Project Zero team revealed that the hacking group behind these attacks ran Read More …

Hafnium’s China Chopper: a ‘slick’ and tiny web shell for creating server backdoors

Researchers have provided insight into China Chopper, a web shell used by the state-sponsored Hafnium hacking group. Hafnium is a group of cyberattackers originating from China. The collective recently came into the spotlight due to Microsoft linking them to recent Read More …

Microsoft Exchange Servers Face APT Attack Tsunami

Recently patched Microsoft Exchange vulnerabilities are under fire from at least 10 different advanced persistent threat (APT) groups, all bent on compromising email servers around the world. Overall exploitation activity is snowballing, according to researchers. Microsoft said in early March Read More …

Accellion zero-day claims a new victim in cybersecurity company Qualys

Qualys has revealed that a “limited” number of customers may have been impacted by a data breach connected to an Accellion zero-day vulnerability. The cloud security and compliance firm said on Wednesday that the security incident did not have any Read More …

Threat Assessment: Active Exploitation of Four Zero-Day Vulnerabilities in Microsoft Exchange Server

On Mar. 2, 2021, Volexity reported in-the-wild-exploitation of four Microsoft Exchange Server vulnerabilities: CVE-2021-26855, CVE-2021-26857, CVE-2021-26858 and CVE-2021-27065. As a result of these vulnerabilities being exploited, adversaries can access Microsoft Exchange Servers and allow installation of additional tools to facilitate Read More …

CISA Alert (AA21-062A): Mitigate Microsoft Exchange Server Vulnerabilities

Cybersecurity and Infrastructure Security (CISA) partners have observed active exploitation of vulnerabilities in Microsoft Exchange Server products. Successful exploitation of these vulnerabilities allows an unauthenticated attacker to execute arbitrary code on vulnerable Exchange Servers, enabling the attacker to gain persistent Read More …

CISA Alert (AA21-055A): Exploitation of Accellion File Transfer Appliance

This joint advisory is the result of a collaborative effort by the cybersecurity authorities of Australia,[1] New Zealand,[2] Singapore,[3] the United Kingdom,[4] and the United States.[5][6] These authorities are aware of cyber actors exploiting vulnerabilities in Accellion File Transfer Appliance Read More …

Accellion FTA Zero-Day Attacks Show Ties to Clop Ransomware, FIN11

Researchers have identified a set of threat actors (dubbed UNC2546 and UNC2582) with connections to the FIN11 and the Clop ransomware gang as the cybercriminal group behind the global zero-day attacks on users of the Accellion legacy File Transfer Appliance Read More …