Email is a common means of delivering cyberattacks, and Microsoft Office documents are commonly attached to malicious emails. More threat actors are using Word and Excel files to deliver zero-day exploits that are getting more dangerous and even harder to detect.
Researchers at Menlo Security dug further into the connection between Microsoft Office documents and cybercrime. They found attackers are increasingly using malicious Office docs for endpoint exploitation but instead of attaching files packed with malicious macros, they use Office docs to call remotely hosted malicious components, launching exploits in the browser.
Read more about how Microsoft Office documents are used by threat actors to deliver remotely hosted malicious components on DarkReading.