Hackers from the group UNC2891 attempted a high-tech bank heist by physically planting a 4G-enabled Raspberry Pi inside a bank's ATM network, using advanced malware hidden with a never-before-seen Linux bind mount technique to evade detection. "The trick allowed the malware to operate similarly to a rootkit, which uses advanced techniques to hide itself from the operating system it runs on," reports Ars Technica. Although the plot was uncovered before the hackers could hijack the ATM switching …