Hackers target 500,000 credit cards: Police

8220;The compromise is believed to have involved approximately 500,000 credit cards and resulted in more than USD 25 million in fraudulent transactions,8221; Australian Federal Police said in a statement today.

8220;The borderless nature of this crime type poses new and unique challenges for law enforcement,8221; it said.

The Australian Federal Police said investigations are continuing and officers are working with police overseas.

8220;International and private sector cooperation is critical to the Australian Federal Police8217;s ability to target this type of compromise,which is a challenging and time

consuming process,8221; it added.

Police have asked people to regularly check their financial statements and advise their banks if they notice any irregular transactions.