For the past few days, news reports addressing the topic of ghost senders have been sparking debate among email administrators and decision-makers. As established experts in email security and business-critical communications infrastructure, Retarus has summarized and analyzed the key details behind Microsoft’s latest headline-grabbing issue for you.

When millions of people around the world tune in to watch the FIFA World Cup, it’s not only fans who look forward to thrilling matches and unexpected results. Cybercriminals also see global sporting events of all kinds as prime opportunities for their attacks. According to the experience of Retarus experts, the number of phishing-based fraud attempts and other email-borne threats rises significantly during major tournaments.

Verizon’s Data Breach Investigations Report (DBIR) has long been considered one of the cybersecurity sector’s most essential status reports. The report’s headline finding for 2026 is that vulnerability exploitation has risen to become the most common initial access vector for successful attacks. Nevertheless, enterprises will find another conclusion especially relevant: The human factor continues to gain in importance – largely due to sophisticated forms of social engineering.

Companies running email security operations in complex environments are acutely aware of the daily challenges – carefully maintaining configurations, ensuring lists are kept up to date, and reliably implementing security policies. This is where the new Configuration API included in Retarus Email Security comes into play.