Barracuda asked its Email Security Gateway customers on June 6 to replace infected appliances immediately, after patching a zero-day vulnerability on May 20 (Brian Krebs/Krebs on Security)

Brian Krebs / Krebs on Security:
Barracuda asked its Email Security Gateway customers on June 6 to replace infected appliances immediately, after patching a zero-day vulnerability on May 20  —  It’s not often that a zero-day vulnerability causes a network security vendor to urge customers to physically remove and decommission …