Spark, 2degrees and Vodafone have released software for blocking the Christchurch gunman's name from appearing on most websites.
The trio say the #ShareNoEvil Chrome browser extension will starve the alleged killer of the publicity he seeks.
If you follow the instructions to install the free software (instructions are here), it will block the name of the Christchurch gunman on "a number of mainstream websites" and replace it with the words "Share no evil." The rest of the site appears as usual.
"It is just one small way to show our support for the victims, but also deprive the gunman's aim for notoriety," a spokeswoman for the telcos says.
Chrome is Google's web browser. An extension - not always loved by IT departments - is a piece of software that gives the browser extra abilities, such as ad-blocking.