Symantec has admitted that blueprints for current versions of its pcAnywhere software were stolen in 2006 and that all users are at risk of attack and should pull the plug.
Naked Security – Sophos

After Microsoft’s shutdown of the Kelihos botnet on Monday some suggested it would slow down Mac malware purveyors. While the shutdown of the botnet and the cz.cc domain will help, it’s only temporary.
Naked Security – Sophos