In 2010 Spamhaus had an issue with Latvian websites and claimed they were emitting spam. They decided to contact the Latvian top-level registrar, NIC.LV, only after adding a major block of IP Addresses to their published RBL Blocklist.

This is the only action that is legal for Spamhaus to take and this is the only action Spamhaus admits that they do. They incessantly state, "We only manage a list", "We are not bound by the DPA of 1998", and "We don't block anything" are among the most prominent ways that Spamhaus and their supporters describe the RBL Operators. The STOPhaus Movement has routinely disputed this as false and misleading to the public. STOPhaus claims that Spamhaus violates multiple terrorism laws by "interfering with an electronic machine" by use of coercion and extortion tactics. Spamhaus denies that they do anything more than maintain a list.

According to NIV.LV, when they refused to terminate services to the IP Addresses listed on Spamhaus' libel site, Spamhaus did exactly what they are not legally allowed to do.

ter·ror·ism
/ˈterəˌrizəm/

Noun
The use of violence and intimidation in the pursuit of personal or political aims
Here is a bit more of the actions, as stated by NIC.LV that serve as evidence that Spamhaus Technology Ltd does, indeed, violate International terrorism laws. Obviously, this is only a piece of evidence in a very large file of evidence being maintained by The STOPhaus Movement for both defensive and offensive measures, but it serves as a third-party realization of the actions that Steve Linford and The Spamhaus Project have routinely denied.

Spamhaus next followed its escalation procedures, which involve using RIPE data to discover who is routing the spam and reporting it to their abuse department.
...in common with its normal practice, Spamhaus contacted Microlines' abuse address to ask them to take down the relevant servers. When no response came, researchers added the firm's IP range to Spamhaus blocklist
Microlines' spam-filled traffic was being routed by Latnet Serviss, a larger ISP. Spamhaus contacted the RIPE-registered abuse address and again received no response. It added part of what it believed was Latnet's IP range to the blocklist, based on a traceroute of the abuse address.
Unbeknown to Spamhaus, however, Latnet Serviss had effectively outsourced management of its abuse department to the University of Latvia's Institute of Mathematics and Computer Science, which houses both NIC.LV and the country's Computer Emergency Response Team (CERT).

As a result, the Institute and many other organisations were effectively cut off from the internet. This got the attention of the NIC.LV, and it wasn't happy.

NIC.LV made a statement concerning these actions that follows;

No internet user should be punished for the actions of another internet user," it wrote. "As nations around the globe recognise that access to the internet is a basic human right it is unnacceptable to block access of those who have not committed any illegal or improper acts.
Read the [Only registered and activated users can see links. ] on how Latvia has identifies the same criminal activity that The STOPhaus Movement fights against.