China’s Tencent’s Security Xuanwu Lab says some chargers can be hacked to deliver too much power. By tampering with the firmware, the voltage delivered can be increased, exceeding the limit for a phone or other device. The result – smoke, a broken device and potentially a fire – can be caused by BadPower attacks. The lab says it found at least 234 fast-charging devices on the market and tested 35 of those, 18 made by eight brands were vulnerable to the attack.”]
Source: https://www.cuinfosecurity.com/heres-how-your-phone-charger-could-be-hacked-a-14674