This hazard is much increased with species that are welldisguised and whose natural instinct is to trust to this concealment as their principal defense.
对于伪装得很好的物种,这种危险会大大增加,它们的自然本能就是相信这种隐藏是它们主要的防御手段。
2
Updates to PCs in Rustock were also disguised to look like comments in discussion boards, making them hard to spot by security software which typically looks for well-known signs of malware.