pcAnywhere users are at great risk. Symantec recommends disabling to prevent a malicious attack.
Symantec, maker of pcAnywhere, warns against malicious attacks that may occur due to a 2006 security breach in which the source code to the pcAnywhere product and other Symantec products was stolen by a hacker. Symantec recommends customers immediately disable the software to prevent malicious attacks. Removal of the software is the best course of action.
pcAnywhere provides remote access and remote desktop functionality, however it does not support two-factor authentication that is necessary for a payment environment to meet PCI DSS compliance.
For more information on this Symantec pcAnywhere security issue, please reference the following white paper published by Symantec on Monday, January 23, 2012: