F-Secure endpoint products offer protection against the Petya ransomware on several layers to ensure that attacks can be stopped at multiple places along the attack chain.
F-Secure's vulnerability management product flags known vulnerabilities within the system for remediation, and our managed incident response service, F-Secure Rapid Detection Service, detects a large number of the TTP techniques used by Petya, allowing our customers to take immediate remediative actions in the case an infection is detected.
F-Secure endpoint solutions block the Petya attacks with their default settings. However, it is always a good idea to check that all security functions are enabled. You should also take steps to mitigate the exploited vulnerability and prevent the attack from spreading in your environment.