With document ID c02699143 on 2011/01/24 an advisory for HP Data Protector 6.11 was released, which describes a potential security problem when using Data Protector and in some circumstances a remote denial of service may possible.
There is a solution, usage of current patches – see article “current patches”. Only Windows operating systems are affected.
The complete advisory can be read here: http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02699143&dimid=1004694894&dicid=alr_jan11&jumpid=em_alerts/us/jan11/all/xbu/emailsubid/mrm/mcc/loc/rbu_category/alerts