Cheaper thermal capture technology can lead to a spike in thermal attacks. We need to imbibe ways to counter them before its too late.
Mohamed Khamis, the assistant professor of computer science at the School of Computing Science at the University of Glasgow, had previously found that even non-experts can accurately determine passwords when shown thermal images of devices captured within 60 seconds of user access.
The researchers suggested that manufacturers of devices such as ATM keypads and payment terminals can use a heating element that can erase traces of finger heat or use surfaces that allow rapid heat dissipation in their manufacturing process. Devices used in public spaces could also feature a physical shield that stays on till the heat is dissipated.
At the user level, the researchers recommended transferring heat from one's hands before using devices or using rubber gloves before keying in critical data to prevent its capture using thermal cameras. Pressing hands on the entire surface or breathing on the device can also help obscure heat signatures.
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