More than a million PCs under the control of spammers are threatening the US national security, its economy and its information infrastructure, according to the FBI.
Cybercriminals are downsizing their botnets to try and trick software security companies.
Dutch police have arrested three individuals suspected of hacking into more than 100,000 computers worldwide and using the hijacked systems in online crimes.
Malicious code that exploits a recent Windows hole has led to significant growth in the number of hijacked PCs, according to messaging security company CipherTrust.
Hoping to turn the tide on spam zombies, Microsoft has filed suit against entities it said used compromised PCs to send millions of junk e-mail messages.
If providers don't pitch in against the threat, customers might defect -- and the health of the Net itself could suffer.
Computer scientist Phillip Hallam-Baker says the rise of the professional hacker means the IT world must unlearn old lessons.
Myriad solutions are available to help eradicate spam. In this guide, ZDNet Australia  looks at one such answer -- hosted or outsourced anti-spam management.
Despite their role as the last gatekeeper of IT security, many employees lack training and understanding. Additional reading: Shed light on shadow IT groups
The domain name system--the global directory that maps names to Internet protocol addresses--was designed to distribute authority, making organisations literally "masters of their own domain".
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