Network Segmentation Failures Heighten Cyberattack Risks in 2026

• •62% of network segments contain only one device category, increasing vulnerability.
• •Only 2% of IP camera segments are isolated, posing significant lateral movement risks.
• •Over 300 incidents of IP camera compromises tracked in 2026, highlighting urgent security needs.

Forescout's analysis of 47,700 network segments across 209 organizations reveals significant network segmentation failures, particularly involving IT, OT, IoT, and IoMT devices. The study found that 62% of segments contained only one device category, while 29% had two and 9% had three or more. Notably, only 13% of segments with OT devices were OT-only, and just 6% of IoMT segments were IoMT-only. The average segment contained 54 devices, increasing the risk of lateral movement if one device is compromised. IP cameras were particularly vulnerable, with only 2% of segments containing cameras being camera-only. Forescout reported over 300 incidents of hacktivist groups compromising IP cameras in 2026, including attacks by the pro-Russian group NoName057(16). The report emphasizes the need for continuous asset visibility and proper segmentation to mitigate risks.