java - X509TrustManager のこの実装の問題は何ですか?

Question

どちらも X509TrustManager の同じ実装を持っていますが、「安全でない実装」があるとフラグが付けられ続けていますが、コードは同じです...これを改善する方法についてのヘルプ/ヒントをいただければ幸いです、セキュリティは私の得意分野ではありません。ありがとう

コード：

public void createTrustManager() {
    // Create a trust manager that does not validate certificate chains
    TrustManager[] trustAllCerts = new TrustManager[] {new X509TrustManager() {
        @Override
        public void checkClientTrusted(java.security.cert.X509Certificate[] chain, String authType) {
    }

    @Override
    public void checkServerTrusted(java.security.cert.X509Certificate[] chain, String authType) {


        try {
            try {
                chain[0].checkValidity();
            } catch (java.security.cert.CertificateExpiredException e) {
                e.printStackTrace();
            } catch (java.security.cert.CertificateNotYetValidException e) {
                e.printStackTrace();
            }
        } catch (IllegalArgumentException e) {

            try {
                throw new IllegalArgumentException("CertificateNotYetValidException");
            } catch (IllegalArgumentException ex) {
                ex.printStackTrace();
            }
        }

    }

    public java.security.cert.X509Certificate[] getAcceptedIssuers() {
        return null;
    }
    public void checkClientTrusted(X509Certificate[] certs, String authType) {
    }
    public void checkServerTrusted(X509Certificate[] certs, String authType) {
    }
}
};

// Install the all-trusting trust manager
SSLContext sc = null;
try {
    sc = SSLContext.getInstance("SSL");



} catch (NoSuchAlgorithmException e) {
    e.printStackTrace();
}
try {
    assert sc != null;

    sc.init(null, trustAllCerts, new java.security.SecureRandom());
} catch (KeyManagementException e) {
    e.printStackTrace();
}
HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());

// Create all-trusting host name verifier

// Install the all-trusting host verifier
HttpsURLConnection.setDefaultHostnameVerifier(new HostnameVerifier()   {
    @Override
    public boolean verify(String hostname, SSLSession arg1) {
        return hostname.equalsIgnoreCase(RestFUL_URLS.DOMAIN) || hostname.equalsIgnoreCase(RestFUL_URLS.DOMAIN) || hostname.equalsIgnoreCase("reports.crashlytics.com") || hostname.equalsIgnoreCase("api.crashlytics.com")  || hostname.equalsIgnoreCase("api.pushy.me")  || hostname.equalsIgnoreCase("mqtt.pushy.me")  || hostname.equalsIgnoreCase("play.google.com" );

    }
});

}