No, many authors just use the default pronoun, which happens to be male. I don't like it. But that's a defect in English. They/Them is less precise.

Using "her" actually apparently attracts attention away from the content. Perhaps mixing both within a longer body of text is a more subtle way.

I like "they". It's especially suitable in this case, because we don't even know if it is a single person, or a group, or maybe even an automated attack (allthough that sounds unlikely). "They" leaves it open to the reader to imagine their stereotypical hacker.

Yeah, contrary to the overwhelming evidence of evil female hackers... /s

>> I won't post it on here because it isn't my intention to start a witch hunt.

It must be a female.