ORIGINAL:
User agents interact with content created by a large number of authors. Although many of those authors are well-meaning, some authors might be malicious.
BETTER:
User agents interact with content created by a large number of authors. Although many of those authors are well-meaning, some authors are malicious.
EXPLANATION:
It is not accurate to say that some authors might be malicious because all author might be malicious. The sentence should simply be “some authors are malicious”.