While true that child sexual abuse has become a problem for many religions and groups, how it is handled when reported to JW elders compounds the problem
In the JW's, this is typically considered a sin, not a crime. While the elders will contact WT legal department for direction, the matter is rarely reported to secular authorities but treated as a JW Judicial Committee matter, including in areas where mandatory reporting is law. Since it would be very strange for anyone to be present to witness sexual abuse when it occurs, if the accused does not admit to the accusation, the matter will usually be dropped and the accuser told to not further discuss it with anyone.
Although JW elders will know who in the congregation has been accused and will take steps to protect their own children, regular JWs in their congregation will likely remain unaware, thereby leaving their children potentially vulnerable to abuse by the same perpetrator involved in the initial incident.
While WT maintains a database of those accused, that database is kept secret by WT even as legal courts have ordered it as evidence in numerous related legal proceedings involving Watchtower.
Suggest searching for information regarding the 2015 Australia Royal Commission into Institutional Responses to Child Sexual Abuse. JWs were not the only group reviewed. Much of the proceedings pertaining to JWs, including testimony by Australia Branch elders and Governing Body member Geoffery Jackson, is retained on YouT so you may view those videos for yourself.