Bank of Nova Scotia will be using Nestor Inc.'s  Prism CardAlert system to combat credit card fraud, Nestor announced. 
"Our goal is to protect our card customers against fraud by using the  best technology available," said Walter Kalichuk, chief security officer at   Toronto-based Scotiabank. "With Prism, we can dynamically update the fraud   detection model and ... catch fraud earlier while maintaining complete   control over our fraud operations."       
  
CardAlert is a type of neural network system, which scans transaction  data and through "learned patterns" can identify those with a high   probability of fraud.   
"Traditional risk management systems are static and provide satisfactory  performance when installed. Over time the performance deteriorates because   the fraud patterns have changed but the fraud detection model hasn't," said   Sushmito Ghosh, Nestor's vice president of financial solutions. "Nestor's   neural technology is unique in its ability to learn dynamic fraud patterns   incrementally."