The network of the Port of Houston, one of the largest port authorities in the US, was targeted by the state-sponsored hacking group using a zero-day vulnerability in a Zoho user authentication appliance.
Port officials successfully defended the attack, and no operational data or systems were impacted as a result of the attempted intrusion.
Source: https://therecord.media/state-sponsored-hacking-group-targets-port-of-houston-using-zoho-zero-day/
"id": "POR221427123",
"linkid": "port-houston",
"type": "Vulnerability",
"date": "09/2021",
"severity": "25",
"impact": "1",
"explanation": "Attack without any consequences"