Cyren Security Blog

Port 25 blocking spurred ISP email relay zombies

by Cyren Security Blog

“This represents a new step in the evolution of spambots. Previously, these bots all tried to transmit directly from port 25, but with the advent of …

An anti-spam standard?

by Cyren Security Blog

From Security_Watchdog blog: “The Internet Engineering Task Force has granted preliminary approval to DomainKeys Identified Mail (DKIM). The …

Microsoft sues stock spamming John Doe

by Cyren Security Blog

Hoping to tackle the growing problem of pump-and-dump stock scams Microsoft has quietly filed lawsuits against at least three alleged perpetrators …

Americans are less bothered by spam

by Cyren Security Blog

The Pew Internet and American Life Project recently published the results of a survey about how American’s relate to spam. The overall conclusion is …

Marketing Malware

by Cyren Security Blog

We always knew that security can’t be left up to users, and now there is hard proof. Reuters just published the results of an (admittedly …

Symantec false positives cripple thousands of Chinese PCs

by Cyren Security Blog

Virus signature update mistakes critical Windows files for malware. “It’s a terrible day for lots of Chinese users (especially Enterprise Users) who …