The battle against phishing is a silent one: every day, Office 365 Advanced Threat Protection detects millions of distinct malicious URLs and email attachments. Every year, billions of phishing emails don’t ever reach mailboxes—
Phishers have been quietly retaliating, evolving their techniques to try and evade these protections. In 2019, we saw phishing attacks reach new levels of creativity and sophistication. Notably, these techniques involve the abuse of legitimate cloud services like those offered by Microsoft, Google, Amazon, and others. At Microsoft, we have aggressive processes to identify and take down nefarious uses of our services without affecting legitimate applications.