At least 10,000 Microsoft email users are receiving emails pretending to be from mail couriers FedEx and DHL Express. Phishing attacks are targeting Microsoft users and aim to swipe their work email account credentials. They also used phishing pages hosted on legitimate domains, including those from Quip and Google Firebase, allowing the emails to slip by security filters built to block known bad links. Researchers noted that it’s possible that attackers were trying to phish for Adobe credentials but it s more likely that they are trying to get victims work credentials.
Source: https://threatpost.com/microsoft-fedex-phishing-attack/164143/