Competitors in the hacker challenge discovered a vulnerability in the BlackBerry Browser. If a user visits a maliciously-designed website then it could allow a hacker gain access to personal data from the particular phone. Hackers will however only be able to gain access to information stored on media cards and in-built phone media and not any information stored in apps such as email, contacts or passwords. The vulnerability can only be exploited in BlackBerry OS 6.0 devices because they utilize the WebKit browser engine – devices running BlackBerry OS 5.0 are unaffected.
While this breach will be seen as embarrassing and potentially dangerous for RIM, who previously had a reputation for excellent security measures, the necessity for them to look to a more open source environment meant this was always going to be a possibility.
Source: PC World