The weakness of images and office documents.
Kaspersky, by Igor Kuksov, October 19, 2020
If you work with sensitive data, these obscure features of PDF, MS Office, and cloud documents are worth knowing about.
Reports, articles, marketing materials – all are types of documents that most of us deal with at some point. We write and edit them on computers, email them to colleagues or friends, share them in the cloud, deliver them to clients, and much more. (Sources)
Kaspersky is a private multinational company specializing in information systems security offering antivirus, anti-spyware, anti-spam and other security tools. Wikipedia