Proofpoint observes notable spike in phishing emails targeting Japanese businesses The emails are being sent out via a kit called CoGUI The researchers attributed the attack to a Chinese-speaking threat actor Threat actors are flooding Japanese businesses with phishing attacks, and are using a unique phishing kit framework called CoGUI to do it. Cybersecurity researchers Proofpoint say they have observed a “notable increase” in high-volume Japanese language campaigns using CoGUI in the wild in October 2024, before starting to track it in December of the same year. “The campaigns typically include a high-volume of messages, with counts ranging from hundreds…