“Over the past six months, cyberattacks have increased significantly, causing major disruption to industries ranging from transportation to healthcare,” said Nozomi Networks OT/IoT security research evangelist Roya Gordon . “Railways, in particular, have been subject to attacks, leading to the implementation of measures designed to protect rail operators and their assets. As cyber threats evolve and intensify, it is important for organisations to understand how threat actors are targeting OT/IoT and the actions required to defend critical assets from threat actors.”
Nozomi Networks Labs analysis of customers’ intrusion alerts over the last six months found weak/cleartext passwords and weak encryption were the top access threats to critical infrastructure environments. This was followed by brute force and DDoS attempts. Trojans were the most common malware detected targeting enterprise IT networks, remote access tools (RATs) topped the malware targeting OT, and DDoS malware targeted IoT devices.
Malicious IoT botnet activity remained high and continued to rise in the second half of 2022. Nozomi Networks Labs uncovered growing security concerns as botnets continue to use default credentials in attempts to access IoT Devices.
From July to December 2022, Nozomi Networks honeypots found:
• Attacks spiked in July, October and December with more than 5,000 unique attacks in each of those months.
• The top attacker IP addresses were associated with China, the United States, South Korea and Taiwan.
• “root” and “admin” credentials are still most often used as a way for threat actors to gain initial access and escalate privileges once in the network.
On the vulnerability front, manufacturing and energy remained the most vulnerable industries followed by water/wastewater, healthcare and transportation systems. In the last six months of 2022:
• CISA released 218 Common Vulnerabilities and Exposures (CVEs) – down 61% from the first half of the year.
• 70 vendors were impacted – up 16% from the previous reporting period; and
• Affected products were also up 6% from the first half of 2022.
Nozomi Networks’ OT/IoT Security Report: A Deep Look into the ICS Threat Landscape provides security professionals with the latest insights needed to re-evaluate risk models and security initiatives, along with actionable recommendations for securing critical infrastructure.
• Read: Nozomi Networks Labs OT/IOT Security Report 2022 2nd Half Review
• Join the 25 January webinar: A Deep Look Into the ICS Threat Landscape
About Nozomi Networks
Nozomi Networks accelerates digital transformation by protecting the world’s critical infrastructure, industrial and government organisations from cyber threats. Our solution delivers exceptional network and asset visibility, threat detection, and insights for OT and IoT environments. Customers rely on us to minimize risk and complexity while maximising operational resilience. www.nozominetworks.com