Cyren Security Blog

Delve into the world of cybersecurity and cybercrime as Cyren experts explore the latest threats targeting businesses, as well as industry trends and technological advances, and how these pressures, risks, and changes impact business reputation and growth.

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Anatomy of a Phishing Attack: Stolen Microsoft 365 Credentials


Phishing attacks designed to steal Microsoft 365 credentials are launched every day and growing more sophisticated. We recently detected a massive attack that hid a fake Microsoft 365 login page in the incoming emails’ attachments.

PEMPEMPEM - Hiding Behind Fake Certificates!


Over the years, enterprise security teams and threat actors have been involved in a never-ending game of cat and mouse. Organizations pour millions of dollars to stop advanced threats, but threat actors continue finding ways to evade detection by either enhancing their code or simply repackaging malware in more ways than one. This blog discusses the use of multiple components, including the use of legitimate software and encryption to deliver malware in a new manner.

Microsoft Finally Acknowledges COVID-19-Related Cybercrimes


On July 7, Microsoft revealed they’ve been working since December 2019 to wrest control of key domains used in vast cyber attacks in 62 countries. 

Spear Phishing, Whaling, and Delayed Detonation, Oh My!


Companies worldwide are up against sophisticated email attacks like Business Email Compromises (BEC).   These attacks are also known as spear phishing, impersonation, and whaling, with the goal of convincing an end-user to release money or provide account information. 

How Machine Learning Is Building a Better Spam Trap


Bad actors are constantly raising the ante on email scams.  According to Microsoft, “phishers have been quietly retaliating, evolving their techniques to try and evade protections. In 2019, we saw phishing attacks reach new levels of creativity and sophistication.”

Microsoft 365 Is Wildly Successful and Profoundly Vulnerable - Here’s Why


Microsoft 365 has been adopted and used at an enormous rate and now powers 600,000 companies in the United States alone. Also enormous? The 78% of Microsoft 365 administrators who reported successful security breaches, citing email phishing as the leading cause.