ArkSigner is a fake extension that can harm your system. It is malware that relates to adware or spyware. Such item will be useless and hazardous. Chromium open source project browsers show such proposals really often. Everything looks quite convincing: you are surfing the Internet and suddenly pay attention to a notification about Google Chrome extension. Users can click on they in rush and do not mind that it is harmful thing. Generally, the extension you see contains infected samples you absolutely do not want to obtain. You will read how to remove the threat next.