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TJX breach total: over 45.7 million card numbers stolen

covers the ongoing how did this happen question. “_TJMaxx computer system intruders who stole 45.7 million credit cards. **The __worm operated __undetected for at least 18 months**, capturing credit card numbers, then __changing timelogs and moving data around to erase its tracks. Initial speculation suggested that the thieves had access to the retailer’s encryption _key. Now it may be that the program captured data before it was encrypted. If the latter, the ramifications are immense, as** it means every single retailer’s credit card processing system is at risk**.