Physically isolating critical systems from networks and systems that are unsecured has long been used as a simple way to protect the former from unwanted intrusions and malware.
Personal information of some 90,000 patients of two Seattle hospitals has been compromised after an employee opened an email attachment that contained malware.
As the value of Bitcoin continues to rise, a lot of people are trying to cash in on the craze.
Kaspersky Lab has recorded several thousand attempts to infect computers used for online banking with a malicious program that its creators claim can attack "any bank in any country".
A new Linux worm - luckily still not spotted being used in the wild - has been unearthed by Symantec researchers.
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