Even if you generated it safely, leaving private_key.txt on your desktop is an invitation for infostealer malware.
A Bitcoin private key is a 256-bit integer. In simpler terms, it is a randomly generated number between $1$ and $2^256-1$. This number serves as the "password" to the Bitcoin secured within a corresponding address. bitcoin wallet private key generator
At its core, a Bitcoin private key is just a very large random number between 1 and approximately 22562 to the 256th power . Because the pool of possible keys is so vast (roughly 107710 to the 77th power Even if you generated it safely, leaving private_key