Cyberattack has halted the printing and the distribution process of few of the leading newspapers in the United States. The attack was targeted at the Wall street Journal, New York Times and others.

According to the Los Angeles Times, the attack came from outside of the United States. Virus infection spread through the Tribune Publishing network, however its aim was not to steal sensitive data, but to disable entire infrastructure. Cyberattack therefore has lead to the infection of key elements of the newspapers’ printing process.

The attack has caused a significant delay in distribution of weekend editions on time. Isolation of malicious software proved to be a difficult task, as programmers encountered numerous traps during their attempts to eliminate system errors. One of the security specialists stated that it was a Ryuka-type of attack, targeted at specific victim, with a focus on infection of network infrastructure, as well as individual systems.