A sophisticated hacking group infiltrated a bank's network by planting a 4G-enabled Raspberry Pi device. This allowed them to remotely access the system and potentially steal sensitive information. Cybersecurity experts are particularly concerned about the group's innovative methods for concealing their custom malware, making detection and removal significantly more challenging. The incident highlights the growing sophistication of cyberattacks targeting financial institutions and the need for robust security measures to protect against such threats. Investigations are ongoing to determine the extent of the breach and identify the perpetrators.