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Bleeping Computer
Microsoft is working on adding XLL add-in protection for Microsoft 365 customers by including automated blocking of all such files downloaded from the Internet. [...]
The Hacker News
Microsoft's decision to block Visual Basic for Applications (VBA) macros by default for Office files downloaded from the internet has led many threat actors to improvise their attack chains in recent months. Now according to Cisco Talos, advanced persistent threat (APT) actors and commodity malware families alike are increasingly using Excel add-in (.XLL) files as an initial intrusion vector.
The Register
Criminals have noticed that spreadsheet's XLL files add custom functionality - including malware It took a few years and one temporary halt, but in July Microsoft finally began blocking certain macros by default in Word, Excel, and PowerPoint, cutting off a popular attack vector for those who target users of Microsoft's Windows OS and Office suite.…
The Register
This is why the Viasat attack – rated one of the biggest ever – had little impact The Kremlin-backed cyberattack against satellite communications provider Viasat, which happened an hour before Russia invaded Ukraine, was "one of the biggest cyber events that we have seen, perhaps ever, and certainly in warfare," according to Dmitri Alperovitch, a co-founder of CrowdStrike and chair of security-centric think tank Silverado Policy Accelerator.… RSA Conference
Bleeping Computer
ThreatPost
An ongoing malicious email campaign that includes macro-laden files and multiple layers of obfuscation has been active since late December.
ZDNet Security
Cybersecurity researchers warn that multiple forms of malware are being stealthily delivered via Microsoft Excel XLL files.
Bleeping Computer
Bleeping Computer
Microsoft Teams and several Microsoft 365 services are experiencing an ongoing outage, with users reporting problems accessing Teams, SharePoint, Excel and the Microsoft 365 Admin Center. [...]