only open source has backdoors.
commercial, closed source software has undocumented admin features. Eventually forgotten debug tools enabled in production.
Tag: backdoor
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Stealthy Microsoft Exchange backdoor discovered
The LightNeuron Microsoft Exchange backdoor can read, modify or block emails going through the compromised server, and even compose and send new emails.
Source: Researchers discover highly stealthy Microsoft Exchange backdoor – Help Net Security
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Samsung Android Mobile Device Backdoor
You better keep your Samsung Android Device in your fridge, going forward.