Not recently, perhaps.
However, Assange definitely has a history of hacking.
When Assange was in his late teens and early twenties, he hacked into several USA government networks, and also into several USA corporate networks. Then, Assange bragged about it on at least one hacker website.
It's my understanding that is why Assange is still in the Ecuador Embassy in London, long after Sweden (?) dropped the rape charge.
The USA has never publicly filed formal charges against Assange, but it is lawfully possible for the USA to ask the UK to detain and eventually hand over Assange to American authorities.
I stand corrected. Back in the day, when he was a younger man, he definitely was doing it, 100% correct.
Realize now, that I was typing more about what he’s been up to, in recent years and what has kept him locked up in an embassy in London.