nssutil3.dll is the Mozilla Network Security Services Utility library is designed to support cross-platform development of security-enabled client and server applications. It provides a complete open-source implementation of the crypto libraries used by Netscape and other companies and is recompiled by OOO . The module nssutil3.dll, “NSS Utility Library” by OOO has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. Note, this is a common distributed file and although it has been detected it might not be a threat is un-coupled from its distribution source.