Trojan:SymbOS/Fontal variants install a corrupted Font file onto the device, causing the device to fail to start at the next reboot.
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Variants in the Trojan:SymbOS/Fontal family affect devices running the Symbian S60 operating system. They are distributed in malicious Symbian Installation (SIS) files. The names of the malicious files may vary depending on the specific variant.
When executed, the Fontal variant will install a corrupted Font file on the device. When the device is next rebooted, the corrupted file is loaded instead of the correct original one; this causes the phone to fail.
For further details on various Fontal variants, please visit the links below:
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