The Computer Fraud and Abuse Act (CFAA) primarily addresses unauthorized access to computer systems and data, as well as other forms of computer-related fraud. Based on the behaviors you've mentioned:
A. A teenager illegally downloading a song: This behavior may violate copyright laws but is not specifically covered by the CFAA.
B. A person in another state accessing their bank account: This scenario typically would not be covered by the CFAA if the person is accessing their own bank account legally.
C. Advertising online for children (presumably referring to inappropriate or illegal content): This could involve violations of laws related to child protection, but it is not directly covered by the CFAA.
D. A person posting comments on their Facebook page: This behavior is generally not covered by the CFAA unless unauthorized access to another person’s account is involved.
In summary, options B and D could potentially connect to legal protections under CFAA, with B being the more straightforward case of accessing one’s own account, which the CFAA would generally protect against being wrongly penalized for unauthorized access. However, strictly speaking, the CFAA itself does not directly provide protection for these behaviors unless they involve unauthorized access issues.