The Dangers of Lateral Movement & Website Cross Contamination

One of the most frequent problems that we observe in website hosting environments is “cross contamination” — the lateral movement of an attacker between websites. Cross-site contamination occurs when a site is infected by neighboring sites within the same hosting environment due to poor isolation on the server or account configuration. In this post we will review what factors lead to the creation of insecure environments, how malware can move laterally between websites, and how to avoid such pitfalls when hosting multiple websites.

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