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A newly discovered and previously undocumented UEFI (Unified Extensible Firmware Interface) bootkit has been used by attackers to backdoor Windows systems by hijacking the Windows Boot Manager since 2012. Bootkits are malicious code planted in the firmware (sometimes targeting UEFI) Read More …
Bugs in the implementation of Microsoft Exchange’s Autodiscover feature have leaked approximately 100,000 login names and passwords for Windows domains worldwide. In a new report by Amit Serper, Guardicore’s AVP of Security Research, the researcher reveals how the incorrect implementation Read More …
Criminals behind the Ryuk ransomware were early exploiters of the Windows MSHTML flaw, actively leveraging the bug in campaigns ahead of a patch released by Microsoft this week. Collaborative research by Microsoft and RiskIQ revealed campaigns by Ryuk threat actors Read More …
Threat actors are sharing Windows MSHTML zero-day (CVE-2021-40444) tutorials and exploits on hacking forums, allowing other hackers to start exploiting the new vulnerability in their own attacks. Last Tuesday, Microsoft disclosed a new zero-day vulnerability in Windows MSHTML that allows Read More …
Microsoft has disclosed the existence of a new zero-day vulnerability that affects multiple versions of Windows. This vulnerability (designated as CVE-2021-40444) is currently delivered via malicious Office 365 documents and requires user input to open the file to trigger. It Read More …
In an advisory issued on Tuesday, Microsoft said some of its users were targeted by poisoned Office documents that exploit an unpatched flaw to hijack their Windows machines. The vulnerability, CVE-2021-40444, is described as a hole in MSHTML, Internet Explorer’s Read More …
The FIN7 financial cybercrime gang is back, delivering JavaScript backdoors using Word documents themed around the next version of Windows. That’s according to researchers at Anomali, who observed a recent campaign from the group that leveraged six different docs, all Read More …
Microsoft has broken its silence on the recent barrage of attacks on several ProxyShell vulnerabilities in that were highlighted by a researcher at Black Hat earlier this month. The company released an advisory late Wednesday letting customers know that threat Read More …
By leveraging more than 20 known vulnerabilities in Linux and Windows servers, the HolesWarm cryptominer malware has been able to break into more than 1,000 cloud hosts just since June. The basic cryptominer botnet has been so successful at juggling Read More …
Technical details are now available for a vulnerability that affects Hyper-V, Microsoft’s native hypervisor for creating virtual machines on Windows systems and in the Azure cloud computing environment. Currently tracked as CVE-2021-28476, the security issue has a critical severity score Read More …
