Such risks may open illicit network connections, use polymorphic tactics to self-mutate, disable security software, modify system files, and install additional malware.

这种风险可能会打开非法网络连接，使用多策略，自我变异，禁用安全软件，修改系统文件，并安装额外的恶意软件。

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But the Justice Department and the FBI want Congress to pass a quite different bill, one, which would make it easier for them secretly to gain access to suspects' computers in their homes, to gather passwords, to install "recovery devices" and to disable encryption and security software.

BBC: Paul Reynolds, BBC Washington Correspondent

Russian IT security company Kaspersky Labs told users to disable its anti-virus software or roll back the update.

BBC: Kaspersky anti-virus cuts web access of thousands of PCs