Adservers compromised in latest Zbot push
As we have commented before when content served up from adservers is compromised, the effects can be far reaching, potentially exposing huge numbers of victims to the malicious code as they innocently browse legitimate sites. The problem is further complicated by the fact that legitimate ad content is often heavily obfuscated, in order to evade ad-blocking technology. During the latter half of this week we have seen a whole batch of compromised adservers injected with malicious JavaScript to silently load malicious content from a remote site. A significant number of popular sites that load ads content from these servers have therefore been affected by this attack. ...