Russia-linked APT group Turla has been using a sophisticated backdoor, dubbed LightNeuron, to hijack Microsoft Exchange mail servers. Russia-linked APT group Turla has been using a sophisticated backdoor, dubbed LightNeuron, to hijack Microsoft Exchange mail servers. Turla group (also known as Waterbug, Venomous Bear and KRYPTON) has been active since at least 2007 targeting government […]