Porn-viewing bosses infect corporate networks.

Do you Want to stop nasty worms from spreading on corporate networks?Then stop bosses from going to porn sites.

> According to a recent survey by software firm Threat Track Security, 40% of tech support employees admit they've had to clean an executive's corporate device after the boss visited an infected porn website.

The survey, conducted in October, shows that while it's generally gotten easier for companies to defend themselves from outside attacks, bosses' bad habits make it difficult to keep up. Here are some other mistakes executives make:

56% got malware from clicking on a bad link or getting duped by a fake "phishing" email.

47% attached an infected device, like a thumb drive or smartphone, to their PC.

45% got a virus when they let a family member use a company computer.

33% installed a malicious app on their company device.

Part of the problem is that employees are less cautious with their iPhones and Android smartphones than they are with their office computers, said Dipto Chakravarty, an engineering and products executive at ThreatTrack. But the risk is the same, because the devices are connected to a company's network.

The problem seems to be getting worse now that many companies have adopted the "bring your own device" approach, allowing workers to connect to company networks with their personal devices.

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