November 11, 2025
3分で読めますSystematically explains ransomware attack methods, damage risks, and multi-layered defense practices. Introducing a realistic defense model that includes EDR, SIEM, and backup strategies|Colorkrew Security
September 27, 20253分で読めますPhishing attacks exploiting Microsoft 365's Direct Send are on the rise. In this article, we will explain the modus operandi, the latest trends, and specific countermeasures (using SPF/DKIM/DMARC/Defender) in an easy-to-understand manner. ｜Colorkrew Security
May 17, 20252分で読めますMicrosoft Authenticator's password saving function has ended. We will explain the password manager and migration procedure of the switch destination in an easy-to-understand manner. ｜Colorkrew Security
March 5, 20254分で読めますLearn about the key features of Microsoft Defender for Office 365. Learn more about how to protect against phishing and malware, the difference between P1 and P2 plans, and how to deploy them. Colorkrew Security Blog
