Attack of the clones: If you were relying on older Xilinx FPGAs to keep your product's hardware code encrypted and secret, here's some bad news
Decrypted configuration bitstream can be siphoned from chips via side-channel flaw A newly disclosed vulnerability in older Xilinx FPGAs can be exploited to simplify the process of extracting and decrypting the encrypted bitstreams used to configure the chips."