An anonymous reader writes: In the wake of the discovery of two backdoors on Juniper's NetScreen firewall devices, Cisco Systems has announced that they will be reviewing the software running on their devices, just in case. Anthony Grieco, a Senior Director of the Security and Trust Organization at Cisco, made sure to first point out that the popular networking equipment manufacturer has a "no backdoor" policy. According to Grieco, Although our normal practices should detect unauthorized software, we recognize that no process can eliminate all risk. Our additional review includes penetration testing and code reviews by engineers with deep networking and cryptography experience. The reviewers will be looking for backdoors, hardcoded or undocumented account credentials, covert communication channels and undocumented traffic diversions.