This IP belongs to that of a Tor Exit Router
While Tor is not designed for malicious computer users, it is true that they can use the network for malicious ends. In reality however, the actual amount of abuse is quite low. This is largely because criminals and hackers have significantly better access to privacy and anonymity than do the regular users whom they prey upon. Criminals can and do build, sell, and trade far larger and more powerful networks than Tor on a daily basis. Thus, in the mind of this operator, the social need for easily accessible censorship-resistant private, anonymous communication trumps the risk of unskilled bad actors, who are almost always more easily uncovered by traditional police work than by extensive monitoring and surveillance anyway.
In terms of applicable law, the best way to understand Tor is to consider it a
network of routers operating as common carriers, much like the Internet
backbone. However, unlike the Internet backbone routers, Tor routers
explicitly do not contain identifiable routing information about the source of
a packet, and no single Tor node can determine both the origin and destination
of a given transmission.
As such, there is little the operator of this router can do to help you track
the connection further. This router maintains no logs of any of the Tor
traffic, so there is little that can be done to trace either legitimate or
illegitimate traffic (or to filter one from the other). Attempts to
seize this router will accomplish nothing.
For legal information, please see the following;
You also have the option of blocking this IP address and others on the Tor network if you so desire. The Tor project provides a web service to fetch a list of all IP addresses of Tor exit nodes that allow exiting to a specified IP:port combination, and an official DNSRBL is also available to determine if a given IP address is actually a Tor exit server. Please be considerate when using these options. It would be unfortunate to deny all Tor users access to your site indefinitely simply because of a few bad apples.