There are many backdoors and zero days, teams that work hard to find new ones, there are spies and hackers, and there are markets for zero days. The rest is speculation. No professional actor will leave traces of the origin of their work, using VPN, fake timezones and comments in different languages instead. Maybe the Chinese bought some stuff, maybe it was North Korea acting as Chinese, maybe the CIA using Ukrainians to steal secrets they can sell to the Russians. We will never know.
There are many backdoors and zero days, teams that work hard to find new ones, there are spies and hackers, and there are markets for zero days. The rest is speculation. No professional actor will leave traces of the origin of their work, using VPN, fake timezones and comments in different languages instead. Maybe the Chinese bought some stuff, maybe it was North Korea acting as Chinese, maybe the CIA using Ukrainians to steal secrets they can sell to the Russians. We will never know.
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