Identity: Names itself in its user agent only.
How to recognise it
- Nothing reliable: Double Agent detects it by behaviour and environment
With Double Agent
Sessions from Sogou spider are labelled bot with agent_id: sogou.spider, and tagged in your analytics. Nothing is blocked unless you choose to. Install: https://doubleagent.so/install.md
Source: https://github.com/monperrus/crawler-user-agents