Sophos has unveiled advancements to Sophos Cloud Workload Protection, including new Linux host and container security capabilities. These enhancements accelerate the detection and response of in-progress attacks and security incidents within Linux operating systems.
According to new SophosLabs research, distributed denial-of-service (DDoS) tools, cryptocurrency miners and various types of backdoors were the top three types of Linux threats detected by Sophos in a dataset from January through March 2022. DDoS tools accounted for nearly half of all Linux malware detections during this time, likely due to automated attacks attempting to reinfect updated servers rapidly and repeatedly. SophosLabs has also detected a recent increase in ransomware attackers attempting to use tools targeting virtual machine hypervisors, many of which run on Linux environments, to carry out their attacks.
“Linux environments continue to grow in surface area as organisations around the world increasingly migrate workloads to the cloud. Even though Linux is widely considered to be one of the most secure operating systems, it still harbors inherent and application-based risks and it is not immune to cyberattacks,” said Joe Levy, chief technology and product officer at Sophos. “Attackers target Linux hosts and containers because they are high value, and often under protected. Sophos Cloud Workload Protection already automates and simplifies the prevention and detection of these attacks on Windows systems, and now Sophos is providing the same observations and capabilities to Linux operating systems.”
Securing Linux Infrastructure
Through the integration of Capsule8 technology, which Sophos acquired in July 2021, Sophos Cloud Workload Protection provides powerful and lightweight visibility into on-premise, data centre and cloud-based Linux hosts and containers, securing them from advanced cyberthreats. It leverages analytics around attacker tactics, techniques and procedures (TTPs) to provide cloud-native threat detections, including:
- Container escapes: Identifies attackers escalating privileges from container access to hosts
- Cryptominers: Detects behaviours commonly associated with cryptocurrency miners
- Data destruction: Alerts that an attacker may be trying to delete indicators of compromise that are part of an ongoing investigation
- Kernel exploits: Highlights if internal kernel functions are being tampered with on a host
Once threats are detected, Sophos XDR (extended detection and response) assigns risk scores to incidents and provides contextual data that enable security analysts as well as the Sophos Managed Threat Response team to streamline investigations and focus on the highest priority incidents. Integrated Live Response further establishes a secure command line terminal to hosts for rapid remediation.