Apple Inc, disclosed a cyber attack Tuesday, which started when employees visited a website for software developers and inadvertently picked up malicious software that infected their computers. … And in a recent report about hackers infiltrating systems at The New York Times, investigators came to suspect that employees opened malicious links or attachments contained in emails. In these and other cyber attacks on corporations and government agencies, employees often serve as gateways for intruders—underscoring the need for better employee education about digital security, according to a new report by the data security solutions firm Trustwave.