Glupteba Botnet Evades Detection with Undocumented UEFI Bootkit

The Glupteba botnet has been found to incorporate a previously undocumented Unified Extensible Firmware Interface (UEFI) bootkit feature, adding another layer of sophistication and stealth to the malware. "This bootkit can intervene and control the [operating system] boot process, enabling Glupteba to hide itself and create a stealthy persistence that can be extremely difficult to

NSA Releases Guide to Combat Powerful BlackLotus Bootkit Targeting Windows Systems

The U.S. National Security Agency (NSA) on Thursday released guidance to help organizations detect and prevent infections of a Unified Extensible Firmware Interface (UEFI) bootkit called BlackLotus. To that end, the agency is recommending that "infrastructure owners take action by hardening user executable policies and monitoring the integrity of the boot partition." BlackLotus is an advanced 

BlackLotus Becomes First UEFI Bootkit Malware to Bypass Secure Boot on Windows 11

A stealthy Unified Extensible Firmware Interface (UEFI) bootkit called BlackLotus has become the first publicly known malware capable of bypassing Secure Boot defenses, making it a potent threat in the cyber landscape. "This bootkit can run even on fully up-to-date Windows 11 systems with UEFI Secure Boot enabled," Slovak cybersecurity company ESET said in a report shared with The Hacker News.

New Flaw in Acer Laptops Could Let Attackers Disable Secure Boot Protection

Acer has released a firmware update to address a security vulnerability that could be potentially weaponized to turn off UEFI Secure Boot on affected machines. Tracked as CVE-2022-4020, the high-severity vulnerability affects five different models that consist of Aspire A315-22, A115-21, and A315-22G, and Extensa EX215-21 and EX215-21G. <!--adsense--> The PC maker described the vulnerability as