Infosecurity Magazine - Office 365 Campaign Attacks Companies from Within

According to Barracuda Networks, Office 365 account compromise is becoming increasingly prevalent, and carried out by bad actors that take the time to craft personalized spear-phishing mails that are hard to identify as bogus. Unlike most broadcast phishing attempts, these don’t contain bold requests, misspelled words or questionable attachments that raise red flags—and they’re tailored.