Area 1 Security recently stopped a sophisticated Microsoft Office 365 credential harvesting campaign targeting C-suite executives, high-level assistants, and financial departments across numerous industries, including financial services, insurance, and retail. Further research and analysis of the activity revealed a much larger operation than originally discovered. This included several additional directly-related credential phishing campaigns that targeted the same industries and positions using sophisticated techniques and advanced phishing kits, to bypass Microsoft’s native email defenses and email authentication.  

Twitter has released additional information on their investigation into the compromise that occurred on July 15, 2020.  The attack, says the company, started with a spear phishing attack on a select group of employees that "relied on a significant and concerted attempt to mislead certain employees and exploit human vulnerabilities to gain access to [Twitter's] internal systems." 

According to the SANS Institute, 95 percent of all attacks on enterprise networks start with a successful spear phishing attack.